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① It is easy to believe that the daily life of a plant is simple and boring. They seem to just stand there and sunbathe. In fact, plants are always busy doing many things. Measuring (估量) light is one of them. This activity helps plants to plan better for the future.
② To start with, we should know how plants feel the light. In fact, there are some special proteins (蛋白质) in their cells (细胞). Once receiving light, they will call on other cells to produce, resulting in the growth towards the light.
③ Then what can plants get from measuring the changes in the amount of daylight? This helps them to tell what time of the year it is. If a plant is beginning to get more daylight, it knows it’s spring. Because of this, it may then start producing flowers.
④ If the amount of daylight starts to get low, the plant knows that autumn is coming. It may start to store “food” for its growth. For example, the potato plant will make tubers(块茎)—the potatoes that we eat.
⑤ Plants record not only the amount of daylight they receive, but also the quality of light. Some forms of light can help plants grow better. Direct sunlight, for example, works better than light that is being separated through the leaves of other plants. A plant can’t get the right form of light when it is prevented from getting light by other plants. It may then begin to grow taller or produce larger leaves in order to get more sunlight.
1. What is one of a plant’s daily activities according to Paragraph 1?A.Producing flowers. | B.Taking in CO2. |
C.Sleeping in the sun. | D.Measuring light. |
A.Nature. | B.Culture. | C.Education. | D.Technology. |
A.Plants Tell Seasons | B.Plants “See” Light |
C.Plants Need “Food” | D.Plants Sunbathe Daily |
A.![]() | B.![]() | C.![]() | D.![]() |
相似题推荐
I developed a habit of daily learning something new many years ago. It’s one of the best things I’ve ever done.
Learning new things can also improve our skills, such as creative writing, math and many others we’ll find helpful now and in the future.
Understanding new information helps us develop our critical (批判性的) thinking skills. When we’re studying a new subject, our brain actively processes new information.
By learning something new, we can have interesting conversations with our friends.
A.It opens my eyes to the world. |
B.Find a good way to learn new things. |
C.The more we use it, the more powerful it gets. |
D.We should let ourselves know as much as possible. |
E.And then it compares the information to what we already know. |
F.Studies have shown that learning new things can improve our memory. |
【推荐2】Language students often think they have memory problems. They worry because they can’t remember words. In fact, the problem usually isn’t with their memory. The problem is with how they study.
To remember words better, you need to understand how memory works. There are two kinds of memory: short-term and long-term. When you see, hear, or read something, it goes first into short-term memory. But short-term memory lasts for only a few seconds. You will only remember something longer if it goes into long-term memory. Your long-term memory is like a very big library with many, many books. And like a library, it’s organized(有条理的).When you put away a book-or memory-you can’t just leave it anywhere. You have to choose a place where you can find it again.
How can you do this with vocabulary? The answer is to work with the word and think about the word in new ways. You can do this by writing new sentences that include it. Even better, you can invent a little story about the word, with people or places that you know. Another way is to make a picture in your mind with the word. For example, if the word is height, you can think of the tallest person you know and try to guess his or her height. All of these activities are good ways to think about words. They make the meaning of words stronger in your long-term memory. And they give a way to find a word when you need it.
1. the writer’s opinion, students can’t remember words because ______.A.they have memory problems |
B.they’re too worried |
C.they don’t use a proper way |
D.they don’t like to study |
A.Short-term memory is seldom used. |
B.What we see goes into long-term memory first. |
C.We will forget a word soon if it goes into short-term memory. |
D.We will never forget a word if it goes into long-term memory. |
A.keeps many books like a large library |
B.works like a well-organized library |
C.provides any book you want |
D.leaves memory anywhere |
A.Making sentences with the word. |
B.Listening to some familiar stories. |
C.Talking with people that you know. |
D.Drawing pictures of the word on paper. |
A.language students’ problems in study |
B.how to make the meaning of words stronger |
C.short-term and long-term memory |
D.how to improve ways to remember words |
【推荐3】Do you dream about a trip to the space one day? Seeds (种子) of some vegetables and crops are a lot luckier than you, as they have travelled to space and back.
China is among the three countries in the world that carry out agricultural research (农业研究) in space. The others are Russia and the US.
Since 1987, China has sent about 1,000 species of seeds into space. These include green peppers (青椒), tomatoes, cucumbers (黄瓜), carrots, lettuce and wheat. Even on China’s first manned spaceship Shenzhou V, there were some seeds from an island.
“Conditions in outer space such as radiation (辐射) and low gravity can cause big changes in the seeds,” said Chinese researcher Jin Xing.
But not all seeds are better after going to space. After returning to the Earth, the best seeds are selected. These seeds grow faster and also produce (生产) much more than normal (正常的) seeds.
1. Which is NOT the country that carry out agricultural research in space?A.Japan. | B.China. | C.Russia. | D.America. |
A.Temperature. | B.Weather. | C.Radiation. | D.Rain. |
A.The name of a man. | B.The name of an animal. |
C.The name of a machine. | D.The name of a vegetable. |
A.The UK carries out agricultural research in space. |
B.Shenzhou V is the first manned spaceship in the world. |
C.Some seeds are better after going to space. |
D.All seeds produce much more after going to space. |
A.Seeds travel to space | B.Ways of growing vegetables |
C.Agricultural research in China | D.China’s first manned spaceship |
【推荐1】①Today, people want to keep healthy through sports. But some of their ideas are not right.
②“Meat is a good meal before games because it has much energy (能量). ” You can have some food like potatoes, bread, bananas and so on. But meat is not a good meal before games, because the best food before games should have carbohydrates (碳水化合物).
③“The best time to do sports is early in the morning.” Morning is a good time to do sports, but it may not be good for you. You can exercise in the afternoon or evening, too.
④“You can’t drink water when you do sports because it makes you feel tired.” When you do sports, you must have some water during breaks. And after exercising, you must have much water. If you don’t drink enough (足够的) water, then you may feel tired.
⑤“Doing sports every day is very important.” No! You need to give your body a day to have a break (休息). Too much exercise is bad for your health. And remember, don’t exercise when you are very tired.
1. What does the underlined word “it” refer to?A.Meat. | B.Meal. | C.Energy. | D.Food. |
A.Mary eats lots of chicken before games. |
B.Mike does sports when he is very tired. |
C.Lucy drinks much water after doing sports. |
D.Bob asks all students to do sports in the morning. |
A.①/②③④/⑤ | B.①/②③/④⑤ | C.①/②③④⑤ | D.①②③④/⑤ |
A.doing sports | B.eating meat |
C.drinking water | D.having a break |
Apple II Jobs and Steve Wozniak founded Apple Computers Inc. in 1976. A year later, the Apple II was invented. This production was the world’s first mass-market personal computer. ![]() | The iMac Under Job’s leadership, Apple introduced the all-in-line iMac computer in 1998. the iMac became the first machine, which offered only a CD-ROM slot. ![]() |
The iPad By 2010, Steve Jobs was confident. The world was ready to have a tablet computer that would be great for watching movies and playing games. The touch-sensitive iPad is a great success. ![]() | iPhone 4s iPhone 4s came out on October 4, 2011, in America. It looks like iPhone 4. It has a larger and wider screen and a slimmer yet wider case. It has a better camera and faster data transfer speeds. ![]() |
1. The Apple II was invented ________.
A.In 1976. | B.In 1997. | C.In 1998. | D.In 2010. |
A.has a better camera | B.is the first personal computer |
C.has a CD-ROM slot | D.is great for watching movies |
A.IPhone 4s’ screen is the same size as iPhone 4. |
B.IPhone 4s has a larger and slimmer case than iPhone 4. |
C.IPhone 4s uses less time to transfer data than iPhone 4. |
D.IPhone 4s with an improved camera is cheaper than iPhone 4. |
【推荐3】Would you BET on the future of this man? He is 53 years old. Most of his adult life has been a losing struggle against debt and misfortune. A war injury has made his left hand stop functioning, and he has often been in prison. Driven by heaven-knows-what motives, he determines to write a book.
The book turns out to be one that has appealed to the world for more than 350 years. That former prisoner was Cervantes (塞万提斯), and the book was Don Quixote (《堂吉诃德》). And the story brings an interesting question: why do some people find new energy and creativity to the end of their days, but others go to seed long before?
We’ve all known people who run out of steam before they reach life’s halfway mark. I’m not talking about those who fail to get to the top. We can’t all get there. I’m talking about people who have stopped learning on growing because they have taken in the fixed attitudes and opinions that all too often come with passing years.
Most of us, in fact, progressively narrow the variety of our lives. We succeed in our field of specialization and then become trapped in it. Nothing surprises us. We lose our sense of wonder. But, if we are willing to learn, the opportunities are everywhere.
The things we learn in maturity (成熟) seldom involve information and skills. We learn to bear with the things we can’t change. We learn to avoid self-pity. We learn that however much we try to please, some people are never going to love us-an idea that troubles at first but is eventually relaxing.
With high motivation and enthusiasm, we can keep on learning. Then we will know how important it is to have meaning in our life. However, we can achieve meaning only if we have made a commitment to something larger than our own little egos (自我) , whether to loved ones, to fellow humans, to work, or to some moral concept.
Many of us regard “commitment” with such “caring” jobs as teaching and nursing. But doing any ordinary job as well as one can is in itself an admirable commitment. People who work toward such excellence whether they are driving a truck or running a store make the world better just by being the kind of people they are. They’ve learned life’s most valuable lesson.
1. The passage starts with the story of Cervantes to show that ________.A.age isn’t a block to achieving one’s goal | B.loss of freedom brings out one’s creativity |
C.misfortune inspires a man to fight against his fate | D.disability cannot stop a man fighting for success |
A.end one’s struggle for freedom | B.lose the interest in continuing learning |
C.waste one’s energy taking risks | D.miss the opportunity to succeed |
A.A strong-willed man can bear suffering. | B.A wise man can live without self-pity. |
C.A man should learn suitable ways to deal with life. | D.A man should try to satisfy people around him. |
A.To suggest a way of going after excellence in our lifelong career. | B.To state the importance of having desire for learning. |
C.To stress the need of shouldering responsibilities at work. | D.To provide guidance on leading a meaningful adult life. |
【推荐1】Have you ever seen the treasures at Sanxingdui?
The number one divine tree (神树) is one of the most famous of them. It includes three parts: a base, the tree itself and a dragon. The base is made to be like a mountain, rising on three sides.
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Some people think the number one divine tree is the tree Fusang in the book “Classic of Mountains and Seas”. It describes there live nine birds carrying the sun from east to west in Fusang tree.
It’s said that there are in total of ten birds. But on the divine tree there are only nine, so where’s the tenth? There are two different ideas.
A.They take turns to finish this job. |
B.What did the people at that time expect of this divine tree? |
C.One bird stands on the upward branch, while some fruit point downwards. |
D.The divine tree is growing from the mountain top and reaching to the heaven (上天). |
E.The divine tree is a symbol of life and can make people in good heath condition. |
F.Since the top of the divine tree is missing, it is possible that there is another bird there. |
Imagine this: you sit down and begin to eat a tasty tomato when, suddenly, it starts to scream (尖叫)! This thing will never really happen.
Researchers did the study. They used ultrasonic microphones (超声波麦克风) to record the sounds of tomato plants in boxes.
There is no evidence (证据) that plants can intentionally communicate.
After the experiment, the researchers listened to other plants such as wheat (小麦) and corn, and found that they also made more sounds when stressed.
A.Three groups of plants were listened to |
B.The researchers don’t know how the sounds are made |
C.Researchers said the study can benefit farmers in the future |
D.But animals and insects may be “listening in” to benefit from the sound |
E.But a new study showed that plants can make sounds when they are stressed |
【推荐3】Earth’s population is growing and some people are worried that there will not be enough food for everybody by the middle of this century. One unusual plant from Madagascar, the Kalanchoe fedtschenkoi(玉吊钟), might be able to help. It absorbs(吸收) carbon dioxide(二氧化碳) at night and it needs 10 times less water than other crops, such as corn. This means it can grow in the desert.
This plant cannot be eaten, but scientists can still study its ability to take in carbon dioxide at night, as most other plants only do this during the day. They can also look at its ability to grow in deserts. Scientists might be able to create a desert plant that people can eat.
Another possibility is to use this type of plant for fuel(燃料). Right now, we use good land to grow plants for fuel and not for food. If we use deserts instead, this problem will be partly solved. Some, but not all, of the plants needed to make fuel can use desert land. This one strange plant could be an answer to our future food and energy(能源) needs.
1. What is Paragraph 2 mainly about?A.Kalanchoe fedtschcnkoi’s special abilities. | B.The difficulty of creating a desert plant to eat. |
C.How to make dangerous plants into safe ones. | D.How scientists plan to study deserts. |
A.it can stop deserts from growing |
B.it could be a safe form of energy in the future |
C.it will allow us to save more good land for food |
D.it will solve the problem of a lack of fuel |
A.To describe some of the problems humans face. |
B.To explain how people are studying a special plant. |
C.To explain the special qualities of some desert plants. |
D.To help scientists publish their recent findings. |