1 . Indoor plants might look as if they just sit around not doing much, but in many ways they are the unsung heroes of the home.     1    , but studies have shown that they can promote people’s wellbeing by improving their mood (心情), reducing stress and helping their memory. What’s more, indoor plants are easy to look after and are not very expensive.

What are indoor plants?

Indoor plants, also known as houseplants or pot plants, are plants that like to grow indoors. Many of these species (物种) are not ideally suited to growing outside in the UK, especially in the winter.     2    .

Why are indoor plants good for you?

Will Spoelstra, who works at the Royal Botanic Gardens, says, “    3    . I find during the winter months, plants around the house can really lift your mood.” Several studies have backed this up and found that indoor plants can improve creativity, focus and memory. There is also research showing that pot plants can clean the air around them by removing harmful gases, such as carbon dioxide. They also remove some harmful chemicals from paints or cooking.     4    .

Which plants can you grow?

Aloe vera, peace lilies and spider plants are some of the species that are easy to grow indoors. You can buy plants from supermarkets, garden centres or online. Younger plants are often cheaper than fully grown ones, and you get to care for them as they mature — which is part of the joy of owning plants. “    5    ,” Spoelstra says. “It can bring a new interest and focus into people’s lives and help to make the link between home and nature.”

A．All plants are different

B．Not only do they look beautiful

C．There are many benefits to growing plants indoors

D．Instead, they grow better inside, where it is warmer

E．Plants like peace lilies and devil’s ivy are among the best

F．Changing the pot of your plant from time to time will also help

G．Learning about the requirements of each plant can be very rewarding

2 . Most of Florida is a flat peninsula (半岛) with water on three sides and houses built as close to the shoreline as possible. For one thing we are more frequently the target of hurricanes than any other state; for another, our geography makes us more easily to be hurt by rising seas.

A news story about climate change in Florida popped up. Historically, scientists believed mangroves (红树林) didn’t live farther north than Cedar Key, in the middle of Florida’s Big Bend. But that’s not the case anymore. Samantha Chapman, a biology professor who’s been studying how Florida’s mangroves have been migrating (迁移), found them up near the St Mary’s River, which forms the border between Florida and Georgia. It seems that they soon be marching through Georgia and becoming a thriving new component of coastal habitats.

But a coastal biologist named Blair Witherington took issue on the matter. The mangroves weren’t spreading into a new territory, he pointed out. They were entering areas that had been classified as saltmarsh (盐沼), where the landscape was dominated by cordgrass. Saltmarsh and mangrove create very different habitats that attract a very different set of animals. “When one community replaces the other, this diversity is lost,” Witherington remarked. Changing the animals’ habitat has the potential to influence the whole food chain, making a widespread difference.

What was driving this? “Mangroves can survive a short freeze, but not a prolonged, hard freeze. By combing through the weather records kept by the state’s orange juice industry, biologists have been able to document that Florida is having fewer prolonged hard freezes than it used to. Then the mangroves have adapted by expanding their range.” Samantha explained.

“They’ve adapted in another way, too. Not only are the mangroves spreading into areas that once were unfriendly to them, but they have also changed their life cycle to speed things up. Normally it takes them about 15 years of growth before they start making seeds. Now, as they get into these marshes, they’re producing seeds when they’ re only a couple of years old,” Samantha said.

The problem with having too many mangroves by the sea is that climate change may overwhelm them. A study by the US Geological Survey said sea level rise could wipe out mangroves all along the Florida coast. So, here’s the question we humans have to consider: Nature is finding ways to adapt to how we’ve changed the climate. What are we doing to adapt to it? Or at least slow it down?

1. What can we learn about the state of Florida?

A．It could be affected by high tides easily.

B．Its geography fuels shipbuilding industry.

C．Its houses are built in a high-lying but flat area.

D．It is often hit by tornadoes and suffers huge losses.

2. What is the news story about Florida’s mangroves?

A．They migrate to warmer regions.

B．They are marching into a new habitat.

C．They form the border between Florida and Georgia.

D．They are introduced into Florida to prevent flooding.

3. Which of the following would Blair Witherington agree with?

A．Saltmarsh is fragile and requires urgent protection.

B．Florida includes a rich diversity of natural habitats.

C．The benefits of the mangroves outweigh their troubles.

D．Everything in the ecosystem is connected complicatedly.

4. What are the 4th and 5th paragraphs mainly about?

A．What mangroves had to face in their habitats.

B．Whether mangroves had influence on other plants.

C．How mangroves adapted to the changing environment.

D．Why mangroves had a different life cycle in marshes.

5. What can we infer from the last paragraph?

A．Human beings are supposed to worship nature.

B．It is urgent to grow more mangroves along coastlines.

C．Measures against mangroves’ migration are far from enough.

D．What we should do to stop the climate change is still up in the air.

3 . With no special equipment, no fences and no watering, two abandoned agricultural fields in the UK have been rewilded (重新野化), in large part due to the efforts of jays, which actually “engineered” these new woodlands. Researchers now hope that rewilding projects can take a more natural and hands-off approach and that jays can shed some of their bad reputations.

The two fields, which researchers have called the New Wilderness and the Old Wilderness, had been abandoned in 1996 and 1961 respectively. The former was a bare field, while the latter was grassland—both lay next to ancient woodlands. Researchers had suspected that the fields would gradually return to wilderness, but it was impressive to see just how quickly this happened, and how much of it was owed to birds.

Using aerial data, the researchers monitored the two sites. After just 24 years, the New Wilderness had grown into a young, healthy wood with 132 live trees per hectare, over half of which (57%) were oaks. Meanwhile, the Old Wilderness resembled a mature woodland after 39 years, with 390 trees per hectare.

“This native woodland restoration was approaching the structure (but not the species composition) of long-established woodlands within six decades,” the researchers explained in the study.

Part of this reforestation was done by the wind, and researchers suspect that previous ground disturbance may have aided the woodland establishment—which is good news, as it would suggest that agricultural areas may be reforested faster than anticipated. However, animals—Eurasian jays, thrushes, wood mice, and squirrels—also played an important role in helping the forests take shape. This handful of species provided much of the natural regeneration needed for the forest to develop. Jays, in particular, seem to have done a lot of heavy lifting.

1. What does the underlined word “shed” in Paragraph 1 refer to?

A．Be opposed to.

B．Be ashamed of.

C．Get used to.

D．Get rid of.

2. Which aspect of the changes in the two fields impressed the researchers?

A．The scale of the woodlands.

B．The diversity of the fields.

C．The rate of the changes.

D．The frequency of the wilderness.

3. What does the author want to tell us by providing some data in Paragragh 3?

A．The woodland restoration was approaching the structure of long-established ones.

B．Much of the wilderness of the fields was owed to birds.

C．Previous ground disturbance aided the woodland establishment.

D．How quickly the fields returned to wilderness over time.

4. What does the last paragraph mainly talk about?

A．The essential role of humans in the reforestation.

B．The factors that contribute to the reforestation.

C．The importance of woodland establishment.

D．The threats faced by a handful of wild animals.

4 . In 2010, Barack Obama was to pay a visit to Mumbai’s Gandhi Museum, where palm(棕榈)trees full of me dotted the grounds. The president knew me well-coconuts (椰子)are a part of life in Indonesia, where he spent his boyhood. Before his visit, Indian authorities, however, removed every last sign of me around the museum. They were afraid the president of the United States would be taken out by one of me falling on his head.

Let’s get this out of the way: My reputation as the “killer fruit” of countless innocents was then and still is a misbelief. A repeatedly misinterpreted 1984 study overstated the number of deaths I caused by hitting people on the head, and the word spread. Today, the only things about me “to die for” are the sometimes too-delicious foods you humans make with me, such as cookies and pies. A decade ago, health experts briefly gave me a halo because some of my fats may raise beneficial cholesterol (胆固醇). But ask a heart doctor today and they’ll tell you that coconut oil will raise your bad cholesterol as much. Death by coconut, indeed!

People have other wrong ideas about me. But allow me to leave you with a sweet presidential tale. A World War II boat commanded by one John F.Kennedy was destroyed in 1943 by a Japanese warship. Kennedy and his surviving crew were stuck on an island. They were suffering from hunger, thirst and injuries when they met two friendly native coast-watchers. Kennedy scratched a message into a coconut shell: “NAURO ISL...COMMANDER...11 ALIVE...NEED SMALL BOAT...KENNEDY.”

The coast-watchers delivered this successfully and all the crew were saved. Years later, the coconut shell was given to the newly elected president. It sat on his office desk throughout his presidency and now is a center-piece of the John F.Kennedy Library in Boston-as the proof that we coconuts don’t take lives, we save them.

1. Why did Indian officials get rid of “me”?

A．To reduce Obama’s fear.	B．To avoid unexpected injuries.
C．To show their welcome tradition.	D．To follow the request from the US.

2. Which of the following can replace the underlined words in paragraph 2?

A．thought little of me	B．did great damage to me
C．made me well-known	D．brought me a good name

3. How does the author sound in the passage?

A．Amusing.	B．Anxious.
C．Concerned.	D．Romantic.

4. What is the purpose of the passage?

A．To show a new discovery.	B．To correct people’s misbelief.
C．To tell the history of coconuts.	D．To describe a successful rescue.

5 . Plants don’t have ears or a central nervous system, but new research out of the University of Missouri has demonstrated that they might still have the ability to “hear”. More specifically, plants have been shown to exhibit an immune (免疫) response to the mere sound of a hungry insect.

For the study, researchers played the sound of a caterpillar chewing to a group of plants, which caused slight vibrations (振动) on the plants’ leaves. The plants were able to recognize these vibration patterns as danger, and responded by mounting the appropriate immune response. In other words, it appears that plants can “hear” themselves being chewed on.

Researchers assume that plants achieve this remarkable ability thanks to proteins that respond to pressure found within their cell membranes. Vibrations cause pressure changes within the cell, which can change the behavior of the proteins; however, additional study will be required to confirm or deny this theory.

Once researchers identify the exact mechanisms at play in this process, it could lead to advances in crop protection. Farmers could potentially learn to use sound to cause a plant’s natural chemical defenses against insect threats, rather than turning to poisonous chemicals.

“We can imagine applications of this where plants could be treated with sound or genetically engineered to respond to certain sounds that would be useful for agriculture,” said study author Heidi Appel.

The study adds to the growing list of ways that plants have been shown to sense their environments. They are not the boring organisms that many people assume they are. For instance, some plants are able to communicate with each other and signal upcoming danger to their neighbors by releasing chemicals into the air. Plants can respond to light (think about sunflowers) and temperature. Some can even respond to touch, such as the Venus flytrap (捕蝇草), which snaps shut when an insect stimulates its hairs.

1. Why did researchers carry out the study?

A．To find out if plants can react to sounds.

B．To learn how plants recognize dangers.

C．To discover if plants can shake their leaves.

D．To see how plants improve immune systems.

2. What’s the potential use of researchers’ discovery?

A．To remove insects.	B．To protect crops.
C．To treat plant diseases.	D．To produce chemicals.

3. What does the author intend to tell us in the last paragraph?

A．There are more plants than we know.

B．Plants are more active than we think.

C．Plants fit in well with their environments.

D．Lots of secrets about plants remain unclear.

4. What can be the best title for the text?

A．Can plants “talk” with each other?

B．How do plants make use of sounds?

C．Can plants “hear” themselves being eaten?

D．How do plants defend themselves against attacks?

6 . A few weeks ago, I received a package containing a small batch (一批) of seeds from my friend. When I asked her what it would grow_________ , a flicker of a smile crossed her face. “Just plant them and be patient. You'll see for yourself_________”she said.

I sowed the seeds in a beautiful flowerpot. In the first few days, I was excited to search for the slightest_________ of germination (发芽). But nothing happened. With_________ homework, I began to feel frustrated and a little bit disappointed. How much I_________a splash of color in my fast-paced life!

I watered the plant carefully. I placed the plant in the sunlight and rotated (旋转) it for a_________ illumination (光照). On the fourth day, to my great surprise a few light green sprouts (芽) _________.

Bending down and carefully studying the seedlings, I could almost_________them growing. More days passed, the flowerpot soon became_________with coriander (香菜) plants.

Now they are taller than the edge of the pot,__________shaking their verdant (青翠的) leaves in the gentle__________of the wind, as if they are merrily singing a song of __________ and freedom.

I am certain that after a few more days, my coriander plants will be ready for__________. Thanks to my friend and my patience, these plants have played a crucial part in__________my everyday life. They may not be a main food on our table, but sprinkling some will surely add a__________of flavor to our dishes to spice up (为…调味) our busy days.

1.

A．into

B．for

C．up

D．out

2.

A．gradually

B．incredibly

C．ultimately

D．intently

3.

A．samples

B．signs

C．routes

D．proofs

4.

A．apparent

B．distinct

C．conventional

D．massive

5.

A．allowed for

B．longed for

C．provided for

D．went for

6.

A．intense

B．violent

C．balanced

D．exceptional

7.

A．emerged

B．hatched

C．reserved

D．sank

8.

A．pray

B．assess

C．forecast

D．hear

9.

A．conflicted

B．facilitated

C．crowded

D．surrounded

10.

A．subsequently

B．constantly

C．extensively

D．merely

11.

A．howl

B．scream

C．thunder

D．whisper

12.

A．initiative

B．leisure

C．harmony

D．luxury

13.

A．possession

B．consumption

C．exposure

D．harvest

14.

A．breaking into

B．relating to

C．brightening up

D．wearing down

15.

A．touch

B．bunch

C．host

D．lot

7 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

With high yield and superior quality, Chinese hybrid rice varieties have been introduced around the world,     1     (benefit) more people. The export of China’s hybrid rice technology started many years ago. In 1979, China provided hybrid rice seeds to another country for the first time, and 40 years later, in     2     (real), China’s hybrid rice has been planted in dozens of countries in the world.

In the past 40 years, Chinese scientists     3     (devote) to providing assistance to many other countries. China has trained more than 14,000 hybrid rice professionals for more than 80 developing countries through international training courses. This technology has spread     4     more and more places in the world so far.

Yuan Longping,     5     cultivated the world’s first high-yield hybrid rice strain not only earned respect from Chinese people but also the global community. His hybrid rice research has been     6     (entire) saving millions of people from hunger. Yuan’s dream was     7     (solve) the global food shortage and promote hybrid rice around the world. China has achieved     8     great wonder, feeding nearly one fifth of the world’s population with less than nine percent of the world’s total land. And China is     9     (will) to contribute to global food security and calls for joint efforts to end global hunger and poverty.

It     10     (believe) that Yuan’s dream will come true one day.

8 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

According to the World Wide Fund for Nature (WWF), approximately three billion people rely on seafood as their     1     (big) source of protein. Just under half of the fish we eat comes from wild animals     2     (catch) in the oceans,     3     the rest coming from fish farms. Besides the familiar fish and shellfish, the oceans provide something else     4     reaches into our diets and daily lives, often without us knowing it. Each year, at least 25 million barrels (桶) of seaweed     5     (farm). Sometimes you’ll see it as the nori (紫菜) wrapped around your sushi rolls, but a lot of it is employed to make     6     (industry) products, including alginates and carrageenans, which end up in all sorts of items. Those     7     (range) from shampoo and toothpaste to ice cream and beer can all contain chemicals got from seaweed.

Seaweed farming has traditionally been carried out in Asia, and now other countries including the UK and US are catching onto the benefits. Not only is seaweed considered to be     8     “superfood” that’s rich in iodine, calcium and amino acids, but it can be     9     (sustainable) farmed and is carbon-neutral (碳平衡), absorbing carbon dioxide and mopping up excess nutrients from the sea. Seaweed can be used     10     (create) biofuels, while research suggests that cattle raised on seaweed-based feeds produce less methane, a greenhouse gas.

9 . We often try to save every drop of water in gardening. Yet this summer, over half of the world is experiencing “abnormally dry” weather, which means millions of people are living under drought conditions.     1     Here are suggestions for how to keep your garden healthy during periods of dry weather.

Choosing water-saving plants

If you are gardening under water restrictions, decide which plants need water least. Older trees, especially fruit, nut, and even evergreens, can suffer during drought, while newly planted trees require regular watering until their roots become established.     2     They can usually get by with less water than crops like corn, which have shallow roots.

Watering effectively

Most plants require an average of 2 to 4 centimeters of water each week under normal conditions. That need could increase, however, during periods of extreme heat, when the soil dries out more quickly.     3     Divide it over two or three times per week with less water. Remember deeper, less-frequent watering instead of daily sprinkle helps get the roots really wet. Also avoid watering midday when moisture is likely to disappear before reaching roots.

    4    

Consider using recycled household water, also called gray water, to water plants. Unsalted water left over from boiling eggs or vegetables provides extra nutrients. Dish and bath water that is not too oily will not harm plants.    5    

A．Using fresh clean water.

B．Choosing recycled water.

C．And melons have deep roots.

D．Try to water your plants all at once.

E．Do not water your plants once weekly.

F．And many of the people have plants to worry about.

G．And water from washing fruits and vegetables can be used around the garden.

10 . Lichens (地衣)

Lichens look like splashes of paint left behind by a careless painter. Unlike many plants, they do not require soil to grow. They grow on trunk of trees in steaming tropical rain forests, on farmers’ fenceposts, on the bricks of big-city buildings, and on old gravestones. Lichens can tolerate extremes of climate. They grow on rocks in hot springs, on wind-swept mountaintops, and on stones in the driest deserts. In the Arctic, lichens are the principal source of food for reindeer. Whole mountainsides in Antarctica appear green and orange because of the presence of lichens; they are one of the few plants that can survive there. They are among the oldest of known plants. Recently, scientists discovered lichen fossils on a rock in a mine in southwest China that date back 600 million years.

When conditions become harsh, lichens become dormant (休眠). If there is not enough moisture, they simply dry up, but a short rain or even a heavy dew gives them new life. When growing on rock surfaces, lichens produce acids that dissolve (溶解) the minerals, contributing to the process of weathering by which rocks are slowly turned to soil. This property enables lichens to be pioneers. They appear on barren rock rubbed clean by glaciers, fires, lava flows, or floods, beginning the process of soil formation that allows mosses (苔藓) and other plants to later take root. But, despite their hardiness, lichens are extremely sensitive to airborne particles(颗粒). That’s why they serve as an early warning system for air pollution.

It is the acids lichens produce that give them their distinctive colors. Lichens are often spoken of in the same breath as mosses, and some lichens are even called mosses, but true mosses are all distinctively green, whereas lichens appear in many vivid colors. At one time, acids from lichens were used to make dyes, such as the purple dye, the blue dye, and the red dye, and they are sometimes still used that way today. Some lichens, such as oakmoss, contain oils that produce fragrant odors used in scented soaps, cosmetics and perfumes. Some lichens are also known to have antibiotic properties to kill bacteria.

So definite are the form, color, and characteristics of these organisms that for hundreds of years lichens were constantly under scientists’ microscope.

1. What characteristic of lichens is mainly talked about in paragraph 1?

A．They grow only on rock surfaces.

B．They live primarily in cold places.

C．They have adapted to a wide variety of environments.

D．They live in remote locations far from human communities.

2. The author refer to lichens as pioneers in paragraph 2 because they __________.

A．have their primitive structure

B．grow in areas before other plants do

C．are found in remote parts of the world

D．develop so early in the history of the planet

3. According to paragraph 3, humans use lichens in the following ways EXCEPT __________.

A．as a means of coloring clothing

B．as a type of medicine

C．as a source of food

D．as an ingredient in perfume

4. Which of the following cases would be probably dealt with in the next paragraph?

A．Lichens are important in Canada because of their abundance in the north.

B．Extracts of lichens were sold as herbal medicines to facilitate hair growth.

C．Glacier Park’s vast array of lichens indicate relatively good air quality.

D．A German botanist first found lichens are composed of two life forms.