―The weather is changeable here. Please take ...

―The weather is changeable here. Please take more clothes.

― _________.

A. Well, it depends　 B. Thanks, by no means

C. OK, just in case　 D. Don’t worry

高三英语单项填空中等难度题查看答案及解析

—The weather here in summer is so changeable. Please take an umbrella when you go out.

—________.

A. Well, don’t worry   B. Well, it just depends    C. Oh, take it easy         D. OK, just in case

高三英语单项填空中等难度题查看答案及解析

—The weather here in summer is so changeable. Please take an umbrella when you go out.

—________.

A. Well, don’t worry   B. Well, it just depends

C. Oh, take it easy      D. OK, just in case

高三英语单项填空中等难度题查看答案及解析

The weather in London is so changeable that people always take their umbrellas with them ____ rain．

A．for fear of                             B．in hope of

C．in spite of                             D．because of

高三英语单项填空中等难度题查看答案及解析

When the weather gets cold, we can put on more clothes, stay next to a fireplace, turn on the air conditioner or simply travel to a warmer city to spend the winter – people have many different ways of coping with the cold.

But things are not as easy for plants. Unlike humans, plants can’t move to escape the cold or generate heat to keep themselves warm. So how do they manage to survive the freezing winter?

It turns out that plants have their own strategies too, said a study published on Dec 22 in the journal Nature.

According to researcher Amy Zanne of George Washington University, US, the cold is a big challenge for plants. Their living tissues can be damaged when they freeze. “It’s like a plant’s equivalent to frostbite (冻疮),” Zanne told Science Daily. Also, the process of freezing and thawing (解冻) can cause air bubbles to form in the plant’s water transport system. “If enough of these air bubbles come together as water thaws they can block the flow of water from the roots to the leaves and kill the plant,” she explained.

To live through cold weather, plants have developed three traits, according to the study. Some plants, such as oak trees, avoid freezing damage by dropping their leaves before the winter chill sets in – effectively shutting off the flow of water between roots and leaves – and growing new leaves and water transport cells when the warm spring returns.

Other plants, pine trees for example, protect themselves by narrowing their water transport cells, which makes it easier for cells to travel among air bubbles.

The third strategy is also the most extreme – some plants die on the ground in winter and start growing as new plants from seeds when conditions get warmer.

However, the study also found that these smart strategies were developed very slowly – over millions of years of evolution. This leads scientists to worry that plants may not be able to deal with human-caused climate change, which has only started occurring over the past few decades.

Scientists are hoping that this study can help people find possible ways to save plants from the threat of climate change.

1.What is the article mainly about?

A.Why plants are not afraid of the winter chill.

B.The ways that plants survive cold weather.

C.Changes in plants’ water transport system in winter.

D.How plants evolve to keep up with climate change.

2.According to the article, if a plant freezes in the winter, ______.

A.it produces more living tissues to stay alive

B.its leaves quickly fall out and its roots begin to die

C.its water transport cells are narrowed

D.its water transport system could be blocked

3.How do oak trees usually survive the cold winters?

A.By dropping their leaves before winter.

B.By narrowing their water transport cells.

C.By widening their water transport cells.

D.By dropping seeds on the ground so that the new trees can grow in the spring.

4.What are scientists worried about when it comes to plants according to the article?

A.Plants may not be able to adapt to the increasingly cold climate.

B.Human activities might have a great impact on the pace of plants’ evolution.

C.Plants may not be able to evolve fast enough to adapt to human-caused climate change.

D.The strategies plants develop are not good enough to protect them against cold.

高三英语阅读理解中等难度题查看答案及解析

IT’S never a real problem for us when the weather gets cold. We can put on more clothes, stay next to a fireplace, turn on the air conditioner or simply travel to a warmer city to spend the winter – people have many different ways of coping with the cold.

But things are not as easy for plants. Unlike humans, plants can’t move to escape the cold or generate heat to keep themselves warm. So how do they manage to survive the freezing winter?

It turns out that plants have their own strategies too, said a study published on Dec 22 in the journal Nature.

According to researcher Amy Zanne of George Washington University, US, the cold is a big challenge for plants. Their living tissues can be damaged when they freeze. “It’s like a plant’s equivalent to frostbite (冻疮),” Zanne told Science Daily. Also, the process of freezing and thawing (解冻) can cause air bubbles to form in the plant’s water transport system. “If enough of these air bubbles come together as water thaws they can block the flow of water from the roots to the leaves and kill the plant,” she explained.

To live through cold weather, plants have developed three traits, according to the study. Some plants, such as oak trees, avoid freezing damage by dropping their leaves before the winter chill sets in – effectively shutting off the flow of water between roots and leaves – and growing new leaves and water transport cells when the warm spring returns.

Other plants, pine trees for example, protect themselves by narrowing their water transport cells, which makes it easier for cells to travel among air bubbles.

The third strategy is also the most extreme – some plants die on the ground in winter and start growing as new plants from seeds when conditions get warmer.

However, the study also found that these smart strategies were developed very slowly – over millions of years of evolution. This leads scientists to worry that plants may not be able to deal with human-caused climate change, which has only started occurring over the past few decades.

Scientists are hoping that this study can help people find possible ways to save plants from the threat of climate change.

1.What is the article mainly about?

A. Why plants are not afraid of the winter chill.

B. The ways that plants survive cold weather.

C. Changes in plants’ water transport system in winter.

D. How plants evolve to keep up with climate change.

2.According to the article, if a plant freezes in the winter, ______.

A. it produces more living tissues to stay alive

B. its leaves quickly fall out and its roots begin to die

C. lots of air bubbles form in its water transport system

D. its water transport system could be blocked in the spring

3.How do oak trees usually survive the cold winters?

A. By dropping their leaves before winter.

B. By narrowing their water transport cells.

C. By widening their water transport cells.

D. By leaving only the seeds alive and growing from the seeds in the spring.

4.What are scientists worried about when it comes to plants according to the article?

A. Plants may not be able to adapt to the increasingly cold climate.

B. Human activities might have a great impact on the pace of plants’ evolution.

C. Plants may not be able to evolve fast enough to adapt to human-caused climate change.

D. The strategies plants develop are not good enough to protect them against cold.

高三英语阅读理解中等难度题查看答案及解析

—Would you please help me to take the clothes downstairs,Tom?

—　　 .

A. Never mind　　 B. That’s right

C. No problem　　 D. Let’s go

高三英语单项填空简单题查看答案及解析

________ to the hot weather here was more difficult than I had expected.

A．Adjusting　                         B．Adopting

C．Relating　                         D．Using

高三英语单项填空中等难度题查看答案及解析

— I’d like to buy the new style of computer here, would you please tell me something more about your product?

---_______________.

A. Thank you　　　 　 　 B. At your service

C. You are welcome　　 D. It’s a pleasure

高三英语单项填空中等难度题查看答案及解析

What is eco­fashion? Eco-fashion is about making clothes that take into account the environment, the health of consumers and the working conditions of people in the fashion industry.

1. Firstly, the production of textiles(纺织品)pollutes the environment heavily. Cotton­planting uses pesticides(杀虫剂)；sheep­farming and wool­cleaning contribute to global warming；Secondly, every stage of clothing production has a significant effect on the environment. They all use a great deal of energy, and some also involve chemicals which evidently do harm to the surroundings.2.Thirdly, growing consumption levels and our shopping habits further worsen the bad effects. We are now so quick to throw away clothes that have been worn only a couple of times.

3.To a large degree, it is the fashion producers that really have the power and the responsibility to shape our future. There are numerous ways in which these producers can reduce their ecological footprint, from switching to green energy and reducing energy use, through selecting sustainable (可持续的)materials and choosing local suppliers, to recycle and minimize waste. 4.

There is some concern that eco-friendly fashions are just a trend that we will eventually grow tired of but in fact, more and more people are concerning about this and we can make sure that doesn’t happen.5.

A. Then, how to solve the problems?

B. They relate directly to our personal health.

C. Because choosing eco­fashion can also contribute to our personal health, though it is mostly done by way of keeping the health of the planet.

D. In addition to this, there is a lot of waste produced in the process, especially in the form of polluted water.

E. The fashion industry has developed quickly.

F. On the other hand, as consumers we can all make contributions by selecting environmentally friendly clothing and reducing clothing consumption.

G. A closer look at the fashion industry points out many problems.

高三英语七选五中等难度题查看答案及解析