I can’t believe that they ______ in the mount...

I can’t believe that they ______ in the mountains for three days now! They must be so frightened.

A. have been missing　　　　 B. have got lost

C. have lost　　　　 D. have missed

高二英语单项填空中等难度题查看答案及解析

They believe that the spirit remains with the body for three days; ________ someon always stays with the dead person．

A．so during this time                             B．during which

C．during which time                             D．so when

高二英语单项填空中等难度题查看答案及解析

Mountaineers have noted that as they climb, for example, up to the 12,633­foot Humphreys Peak in Arizona, plant life changes greatly. In the Sonoran Desert, one climbs into a pine forest at 7,000 feet and a treeless tundra(冻土带) on the top of the mountain. It may seem that plants at a given altitude are associated in what can be called “communities” －groupings of species. The idea is that over time, plants that require particular climate and soil conditions come to live in the same places, and are frequently to be found together. Scientists study the history of plant life and build up a picture of how groups of plants have responded to climate changes and how ecosystems develop. But are these associations, which are real in the present, permanent?

A great natural experiment took place on this planet between 25,000 and 10,000 years ago, when small changes in the earth’s orbit caused great sheets of ice to spread from poles. These glaciers(冰川) covered much of North America and Europe to depths of up to two miles, and then, as the climate warmed, they retreated. During this retreat, they left behind newly uncovered land for living things to occupy, and as those living things moved in they laid down a record we can read now. As the ice retreated and plants started to grow near a lake, they release pollen(花粉). Some would fall into the lake, sink to the bottom and mix with the sand. By drilling into the lake bottom it is possible to read the record of the plant life around the lake. The fossil record seems clear; there is little or no evidence that entire groups of plants moved north together. Things that lived together in the past don’t live together now, and things that live together now didn’t live together in the past. Each individual living things moved at its own pace. The fossil record seems to be telling us that we should be thinking about preserving species by giving them room to move about－to respond to environmental changes.

1.According to the passage, the movement of individual species of plants ________.

A. occurs in groups

B. often depends upon the formation of lakes

C. does not occur in groups

D. depends upon climate and soil conditions

2. All of the following are true EXCEPT ________.

A. The ice age occurred when there were small changes in the orbit of the earth

B. fossil records seem to indicate that plants will be preserved if they have enough room to move

C. fossil records clearly show that entire groups of plants are unlikely to have moved together

D. in the ice age glaciers covered the world to depths of up to two miles

3.The underlined word “which” refers to ________.

A. the responses of plants to climate changes

B. the current theories of ecosystems

C. the development of ecosystems

D. plant life changes

4.The second paragraph is intended to ________.

A. support the main idea of the first paragraph

B. answer the question raised in first paragraph

C. make suggestions about responding to environmental changes

D. stress the importance of preserving species

高二英语阅读理解中等难度题查看答案及解析

Lost in the mountains for three days, what the three men were able to do was 　　　　 the help of helicopters.

A. expected　　 B. expect

C. being expected D. to be expected

高二英语单项填空中等难度题查看答案及解析

We　 can’t deny that trees are useful to man in three very important ways: they provide him with wood and other products, they give him shade, and they help to prevent drought and floods.

Unfortunately, in many parts of the world man has not realized that the third of these services is the most important. In his eagerness to draw quick profit from the trees, he has cut them down in large numbers, only to find that without them he has lost the best friends he had.

Two thousand years ago a rich and powerful country cut down its trees to build warships, with which to gain itself an empire. It gained the empire but, without its trees, its soil became hard and poor. When the empire fell to pieces, the country found itself faced by floods and starvation.

Even though a government realizes the importance of a plentiful supply of trees, it is difficult for it to persuade the villager to see this. The villager wants wood to cook his food, and he can earn money by making charcoal or selling wood to the townsman. He is usually too lazy or too careless to plant and look after trees. So unless the government has a good system of control, or can educate the people, the forests will slowly disappear.

This does not only mean that the villagers’ sons and grandsons have fewer trees. The results are even more serious. For where there are trees ,their roots break the soil up, allowing the rain to sink in and also bind the soil, thus preventing it being washed away easily, but where there are no trees, the soil becomes hard and poor. The rain falls on hard ground and flows away on the surface, causing floods and carrying away the rich topsoil, in which crops grow so well. When all the topsoil is gone, nothing remains but worthless desert.

1.It’s a great pity that ________.

A. man is only interested in building empires

B. man is eager to profit from trees

C. man hasn’t realized the importance of trees to him

D. man hasn’t found out that he has lost all trees

2.Sooner or later the forests will disappear______

A. unless people are taught the importance of planting trees

B. unless people stop cutting down their trees

C. unless a county has a plenty supply of trees

D. unless the government punishes those who cut trees instead of planting trees

3.The word “bind” in Paragraph 5 means”_________”

A. to make stay together　　　　　 　 B.　 to make wet

C. to wash away　　　　　　　　　　　　 D.　 to improve

4.When there is a heavy rain ,trees can help to prevent floods, as they can ___________

A. keep rain from falling down to soft ground

B. cause the soil to allow rainwater to sink in

C. prevent the soil from being washed away

D. make the topsoil stick together

高二英语阅读理解中等难度题查看答案及解析

They believed that production in their factory        by bringing in the latest equipment from abroad .

A . will greatly increase        B . would be greatly increased

C . has greatly increased        D . had been greatly increased

高二英语单项填空简单题查看答案及解析

They believed that production in their factory________by bringing in the latest equipment from abroad .

A . will greatly increase        B . would be greatly increased

C . has greatly increased        D . had been greatly increased

高二英语单项填空中等难度题查看答案及解析

Many teenagers feel that the most important people in their lives are their friends. They believe that their family members, especially their parents, don’t know them as well as their friends do. In large families, it is often for brothers and sisters to fight with each other and then they can only go to their friends for advice. It is very important for teenagers to have one good friend or many friends. Even when they are not with their friends, they usually spend a lot of time talking among themselves on the phone. This communication is very important in children’s growing up, because friends can discuss something difficult to say to their family members.

However, parents often try to choose friends for their children. Some parents may even stop their children from meeting their good friends. The question of “choice” is an interesting one. Have you ever thought of the following questions?

Who chooses your friends?

Do you choose your friends or your friends choose you?

Have you got a good friend your parents don’t like?

1.Many teenagers think their _________ know them better than their parents do.

A.friends   B.teachers    C.brothers and sisters     D.classmates

2.When teenagers stay alone, the usual way of communication is to _________.

A.go to their friends                   B.talk with their parents

C.have a discussion with their family

D.talk with their friends on the phone

3.Which of the following sentences is TRUE?

A.Teenagers can only go to their friends for help.

B.Parents should like everything their children enjoy.

C.In all families, children can choose everything they like.

D.Parents should try their best to understand their children better.

4.The main idea of this passage is that _________.

A.Teenagers need good friends

B.Friends can give good advice

C.Parents often choose friends for their children

D.Good friends can communicate with each other

高二英语阅读理解中等难度题查看答案及解析

Many teenagers feel that the most important people in their lives are their friends. They believe that their family members, especially their parents, don't know them as well as their friends do. In large families, it is often for brothers and sisters to fight with each other and then they can only go to their friends for advice.

It is very important for teenagers to have one good friend or many friends. Even when they are not with their friends, they usually spend a lot of time talking among themselves on the phone. This communication is very important in children's growing up, because friends can discuss something difficult to say to their family members.

However, parents often try to choose their children's friends for them. Some parents may even stop their children from meeting their good friends. The question of "choice" is an interesting one. Have you ever thought of the following questions?

Who choose your friends?

Do you choose your friends or your friends choose you?

Have you got a good friend your parents don't like?

1.Many teenagers think their ________ know them better than their parents do.

2. When teenagers stay alone, the usual way of communication is to ________.

3.Which of the following is different in meaning from the sentence "Some parents may even stop their children from meeting their good friends."?

4.The passage suggests (暗示) that _______.

5.Which of the following do you think is right according to the passage?

高二英语阅读理解中等难度题查看答案及解析

Many teenagers feel that the most important people in their lives are their friends. They believe that their family members don’t know them as well as their friends do. In large families, it is quite often for brothers and sisters to fight with each other and then they can only go to their friends for some ideas

It is very important for teenagers to have one good friend or a group of friends. Even when they are not with their friends, they usually spend a lot of time talking among themselves on the phone. This communication is very important in children’s growing up, because friends can discuss something. These things are difficult to tell their family members.

However, parents often try to choose their children’s friends for them. Some parents may even stop their children from meeting their good friends. Have you ever thought of the following questions?

Who chooses your friends?

Do you choose your friends or your friends choose you?

Have you got a good friend your parents don’t like?

Your answers are welcome.

1. Many teenagers think that ____ can under­stand them better.

A. friends            B. brothers      C. sisters         D. parents

2.When teenagers have something difficult to tell their parents, they usually____.

A. stay alone at home B. fight with their parents

C. discuss it with their friends                          D. go to their brothers and sisters for help

3. The sentence （句子） “Your answers are wel­come. ” means _______.

A. You are welcome to discuss the questions with us

B. We’ve got no idea, so your answers are welcome

C. Your answers are always right

D. You can give us all the right answers

4. Which of the following is the writer’s attitude（态度）?

A. Parents should choose friends for their children.

B. Children should choose everything they like.

C. Parents should understand their children better.

D. Teenagers should only go to their friends for help.

高二英语阅读理解中等难度题查看答案及解析