1 . 听下面一段较长对话，回答以下小题。
1. What does Jacob ask Amy to do?

A．Enjoy the flowers.

B．Provide help.

C．Grow flowers.

2. How often does Jacob water flowers?

A．Every day.

B．Every two days.

C．Every three days.

3. What do we know about Jacob’s flowers?

A．They lack water.

B．They lack sunshine.

C．Their leaves turn yellow.

4. What will Jacob do?

A．Water flowers in time.

B．Learn about growing flowers.

C．Grow flowers with Amy.

2 . Cork is a light brown material harvested from the cork oak tree. Cork is lightweight, strong and resistant to water.     1     For thousands of years, people have used pieces of cork as closures for bottles because cork is made of small cells filled with air. It is said that no technology has been able to copy this unusual material exactly.

The cork oak tree is native to the western Mediterranean coast of Europe.     2     In fact, Portugal produces more than half of the world’s cork supply. Cork oak trees have to be at least twenty-five years old before they are ready for harvest.     3     Cork is gathered by skillfully cutting off the outer layer of the tree with special knives. The harvest weakens the tree temporarily, but it soon starts to grow a new layer of bark. Next, the cork harvest is set out in the open for six months. Then, the cork is boiled in order to clean it and make it softer.     4    

Because cork oak trees are not killed during harvest, they can live for as long as 200 years. Also, used cork products can be recycled and used again. This makes cork a valuable renewable resource.     5    Wine makers say cork stoppers in their bottles let the wine be aged and improve over time. But now some wine producers are changing to plastic or metal closures. Some environmentalists worry that if cork starts to lose its value, the cork oak forests in Europe will no longer be protected.

A．After drying, the cork is ready to be cut.

B．Harvests only happen once every nine years.

C．Cork has even found a use in making rockets.

D．It is best known for keeping liquids from spilling.

E．Cork can be shined and used to cover floors and walls.

F．The largest cork oak forests in the world are in Portugal.

G．The wine industry has been a major supporter of cork production.

3 . 听下面一段独白，回答以下小题。
1. How many people died in a landslide in 2003?

A．About two hundred.

B．Over one thousand.

C．About two thousand.

2. What has the Philippines banned for several years?

A．Growing grass.

B．Cutting down trees.

C．Growing population.

3. What does the speaker advise to protect our environment?

A．Growing more forests.

B．Chopping down the old forests.

C．Getting busy in protecting our country.

4 . Why did the woman’s plants die according to the man?

A．From not enough water.

B．From not enough sun.

C．From not enough plant food.

5 . 听下面一段较长对话，回答以下小题。
1. What’s the size of the redwood forest in Muir Woods National Monument?

A．240 acres.

B．319 acres.

C．559 acres.

2. How old are the redwood trees in Muir Woods?

A．Less than 400 years old.

B．400 to 800 years old.

C．More than 1 ,000 years old.

3. What kind of climate do the redwood trees like?

A．Dry and sunny.

B．Wet and rainy.

C．Wet and foggy.

4. Which city is the redwood forest near?

A．New York.

B．San Francisco.

C．Los Angeles.

6 . 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。

Plant lovers believe that talking to plants helps them grow. Scientists have discovered there could be real     1     (true) in this belief. Researchers have discovered that plants give off sounds when they are stressed. The sounds are quite similar     2     a human cry. Unfortunately, plant sounds are at too high a frequency for the human ear     3     (pick) up. Humans can only hear frequencies of up to 16 kilohertz (赫兹). Using special Al technology, scientists can now pick up sounds     4     (send) out by plants that are up to 250 kilohertz. The Al can also tell differences between different types of plant sounds.

The research     5     (do) in a greenhouse at Israel’s Tel Aviy University. Lead researcher Professor Lilach Hadany said: “Plants usually give off sounds when they     6     (be) under stress. Each plant and each type of stress is connected with     7     specific sound.” She suggested that crop fields could be quite     8     (noise), saying “While unable to be picked up by the human ear, the sounds given off by plants can be heard by bats,     9     (mouse) and insects. Understanding these sounds could help us know when crops need watering,     10     means farmers could water their crops more efficiently and thus save water and money.

7 . What kind of plants does the neighbor have according to the man?

A．Weeds.

B．Wild flowers.

C．Flowers from store.

8 . Scientists have been experimenting with playing sounds to plants since at least the 1960s, during which time they have been exposed to everything from Beethoven to Michael Jackson. Over the years, evidence that this sort of thing can have an effect has been growing. One paper, published in 2018, claimed that an Asian shrub known as the telegraph plant grew substantially larger leaves when exposed to 56 days of Buddhist music — but not if it was exposed to Western pop music or silence. Another, published last year, found that marigolds and sage plants exposed to the noise of traffic from a busy motorway suffered growth difficulty.

Plants have been evolving (进化) alongside the insects that eat them for hundreds of millions of years. With that in mind, Heidi Appel, a botanist now at the University of Houston, and Reginald Cocroft, a biologist at the University of Missouri, wondered if plants might be sensitive to the sounds made by the animals with which they most often interact. They recorded the vibrations made by certain species of caterpillars (毛毛虫) as they chewed on leaves. These vibrations are not powerful enough to produce sound waves in the air. But they are able to travel across leaves and branches, and even to neighbouring plants if their leaves touch.

They then exposed tobacco plant — the plant biologist’s version of the laboratory mouse — to the recorded vibrations while no caterpillars were actually present. Later, they put real caterpillars on the plants to see if exposure had led them to prepare for an insect attack. The results were striking. Leaves that had been exposed had significantly higher levels of defensive chemicals, making them much harder for the caterpillars to eat. Leaves that had not been exposed to vibrations showed no such response. Other sorts of vibration — caused by the wind, for instance, or other insects that do not eat leaves — had no effect.

“Now speakers with the right audio files are more often being used to warn crops to act when insects are detected but not yet widespread,” says Dr. Cocroft. “Unlike chemical pesticides, sound waves leave no dangerous chemicals.”

1. What can we learn about plants from the first paragraph?

A．They may enjoy Western music.	B．They can’t stand Buddhist music.
C．They can react to different sounds.	D．They can make different sounds.

2. What’s the basis for Appel and Cocroft’s research?

A．Plants can make a cry for help.	B．Plants evolve alongside insects.
C．Plants are sensitive to the sounds.	D．Plants have been studied for years.

3. What can we infer about plants from Paragraph 3?

A．They can recongnize harmful vibrations.	B．They look like laboratory mice.
C．They can threaten the caterpillars.	D．They can release poisonous chemicals.

4. What does the last paragraph mainly talk about?

A．Disadvantages of chemical pesticides.	B．Application of the experimental results.
C．Interaction between plants and insects.	D．Warning system of widespread insects.

9 . In 1986, when he was only a prince. King Charles told a television interviewer that it was important to talk to plants. He was widely laughed at. But his wisdom seems to have been ahead of its time, for there is now plenty of evidence that plants can detect (察觉) sound, react to it, and even perhaps produce it.

Scientists have been experimenting with playing sounds to plants since at least the 1960s, during which time they have been exposed to everything from Beethoven to Michael Jackson. Over the years, evidence that this sort of thing can have an effect has been growing. One paper, published in 2018, announced that an Asian plant grew much larger leaves when exposed to 56 days of Buddhist chants — but not if it was exposed to Western pop music, or silence. Another, published last year, found that plants exposed to the noise of traffic from a busy motorway suffered slow growth, and produced a range of stress compounds (成分).

Another research reports that certain frequencies (频率), played in some environments like greenhouses, can affect seed growth and even improve crop production. And plants can make noises, too. Earlier this year a group of researchers at Tel Aviv University published an article in Cell Press, reporting that several plants gave out different noises in response to different stresses — although not at the sorts of frequencies that humans can hear. Humans can only hear frequencies of up to 16 kilohertz. Scientists discovered sounds given out by plants were up to 250 kilohertz.

If all that sounds strange, perhaps it should not. After all, sound carries useful information.

From an evolutionary point of view, there is no reason to expect that information to be applied only by animals.

1. What was most people’s attitude to Charles’ opinion?

A．Unclear.

B．Positive.

C．Cautious.

D．Negative.

2. What can we learn from paragraph 2?

A．Different sounds have different effects on plants.

B．Buddhist chants don’t make a difference to plants.

C．Western pop music does good to plants’ growth.

D．The noise of traffic produces stress compounds.

3. Why can’t humans hear sounds given out by plants?

A．The sounds are strange.	B．The plants grow in greenhouses.
C．The plants are under great stress.	D．The sounds are at high frequencies.

4. What’s the main idea of the text?

A．It’s the important to talk to plants.

B．Sounds make a difference to plants.

C．Plants can discover and even make sound.

D．Humans can’t hear sounds produced by plants.

10 . Scientists have known for years that plants respond to sounds around them. For example, flowers make sweeter nectar (花蜜) to the sound of buzzing bees. But now scientists in Israel have shown that plants also seem to be doing some “talking”.

Professor Lilach Hadany and her team at Tel Aviv University set up microphones to record tomato and tobacco plants under different conditions. Their recordings showed that the plants made ultrasonic (超声波的) sounds.

When the researchers adjusted their recordings so that humans could hear them, they heard sharp clicking noises. Plants clicked hardly at all when they had enough water. But as their soil got drier, they clicked more and more. When scientists cut off a stem (茎) from the plants, the plants also clicked more. But the clicking wasn’t the same as when the plants needed water.

It’s not clear how the plants make the sounds and whether the plants are making the sounds on purpose. But the plants are definitely making noises, and creating much more noises when they’re stressed (not enough water, stem cut off) than when they’re not.

The researchers trained an Artificial Intelligence (AI) system to identify the different kinds of clicking sounds. The system was able to tell the difference between plants that needed water and plants with cuts about 70% of the time. The result suggests that researchers may one day be able to use a plant’s sounds to figure out when it is having trouble, and what trouble it is having. That could be very helpful to farmers.

The new discovery raises many more questions. One important question is: Do plants make sounds to communicate with each other? Other research has shown that plants do seem to communicate in some ways. Plants being attacked by insects send chemicals into the air. Soon, nearby plants (that haven’t been attacked yet) start to make other chemicals that don’t taste good to insects. It’s possible that the ultrasonic sounds could work in a similar way.

1. What do the researchers find in their recordings?

A．Plants’ stems click less when they are cut off.

B．Plants click harder if they have enough water.

C．Plants make more noises when they are thirsty.

D．Flowers make sweeter nectar to the sound of bees.

2. What can we learn about the plants from paragraph 4?

A．There are still some unknown issues.

B．Not all of them are able to make sounds.

C．There are ultrasonic sounds around them.

D．They make less noises when they’re stressed.

3. What is the purpose of the AI system created by the researchers?

A．To help farmers drive away insects.

B．To identify people who are in trouble.

C．To show the growing process of plants.

D．To distinguish types of clicking sounds.

4. What might the author continue talking about?

A．Methods for plants to protect themselves.

B．Other questions raised by the new finding.

C．When plants communicate with each other.

D．Under what conditions plants attract insects.