This kind of fish are on the verge of extinction,because so many are being killed for their fins.A:drying up B:dying out C:being exported D:being transplanted

A.to be absent

B.were absent

C.being absent

D.was absent

Passage Five

The Northern Pike is a very bad fish. It is a big, hungry fish, and swallows little fish such as trout and perch. Many Northern Pikes live in Lake Davis. They are killing all the smaller fish in the lake. The Northern Pike are a serious threat to the lake because they eat all the smaller fish. Soon, all other species of fish in the lake will be killed off. This is not healthy for the environment.

Experts are afraid that the Northern Pike will swim out of Lake Davis through many smaller rivers that feed into the lake. They could spread all over the country and damage many other water environments. If that happens, it would be too late to stop the Northern Pike.

For ten years, officials have been trying to remove the Northern Pike from Lake Davis. They haw. tried using nets, explosives and poisons. However, the Northern Pike population is still doing well in Lake Davis. Many people do not like the idea of using poison to kill the fish. They worry that the poi- sons are bad for humans who use the water. No trace of the poisons has ever been found in local wells, however.

Scientists are going to try the poison again. This time, they will drain the lake before they add the poison to the water. A public hearing will be held to talk about the problem.

52. Why are some people against the use of poisons to kill Northern Pike?

A. Fishermen will be poisoned too.

B. The poisons are expensive.

C. They think that wells will be polluted.

D. The lake will become unsafe.

阅读下面短文，根据短文内容，在短文后８１－８５小题中句子空白处填入适当的词语或句子。

We know that many animals do not stay in one place. Birds, fish and other animals move from one place to another place at a certain time. They move for different reasons: most of them move to find food more easily, but others move to get away from places that are too crowded.

When cold weather comes, many birds move to warmer places to find food. Some fishes give birth in warm water and move to cold water to feed. The most famous migration is probably the migration of fish, which is called “salmon”（鲑鱼）. This fish is born in fresh water but it travels many miles to salt water. There it spends its life. When it is old, it returns to its birthplace in fresh water. Then it gives birth and dies. In northern Europe, there is a kind of mouse. They leave their mountain homes when they become too crowded. They move down to the low land. Sometimes they move all the way to the seaside, and many of them are killed when they fall into the sea.

Recently, scientists have studied the migration of a kind of lobster(龙虾). Every year, when the season of the bad weather arrives, the lobsters get into a long line and start to walk across the floor of the ocean. Nobody knows why they do this, and nobody knows where the go. So, sometimes we know why humans and animals move from one place to another place, but at other times we don’t. Maybe living things just like to travel.

81. The reason for most of the animals to move is _____________________.

Interviewer-------- Why is English so important?

David------- Well, English is so important primarily because so many people speak it and use it, so it has now become the lingua franca in the world in a way that we’ve never seen before. We’ve never had a world language of this kind before. So people are learning it not just to be able tocommunicate with native speakers, but also with speakers of other language around world.

Interviewer-------And why has it become that dominant language?

David------I think the reason for that is actually very complicated, although in the twentieth century, we can just see that it’s the rise of the US military and consumer power. I mean the technology, all the big developments in technology largely came from the US. So all of these developments actually were produced within the English language, and people had to learn English in order to understand them, or to benefit from them. The Internet is only one example of that kind. Once a language has got into that position of dominance, it’s actually very different to shift it. So we could be seeing the emergence of other big languages in the world becoming more important than they have been, like Spanish, but it’s unlikely that they’re going to shift the English from its position of dominance.

36. English is important, according to David, __________________________. A). because it has become a world language B). because so many people speak and use it C). because a lot of people are learning it D). because it is the lingua franca

37. English has become the dominant language in the world________________________. A). because it has always been the way B). for a reason that is very complicated C). only in the 20th century D). for no reasons

38. English became the dominant language in the 20th century_________________________. A). in the USA

B). because of the increase in American consumer power

C). because developments in technology came mainly from USA. D). all over the world.

39. People had to learn English______________________.

A). because developments in technology were made by English speakers B). because they needed to understand the new developments in technology C). to use the Internet

D). to speak with native Americans

40. David thinks that__________________________.

A). it will be easy for another language to become dominant B). English will not always be the dominant language

C). it will not be easy for another language to become dominant D). English will be the dominant language

I'm()because there are so many options. I can't make a decision.

A. puzzled

B. excited

C. depressed

With so many eyes ______on him, he was too nervous to speak.

A. fixed

B. fixing

C. to fix

D. being fixed

A、You are so kind

B、You are kind enough

C、It's so kind for you

D、It’s very kind of you

A、because of your overweight

B、your being overweight

C、because you are overweight

D、you are so overweight

A、because they don't have what they actually want

B、no beautiful young ladies showed up

C、steamed fish with all the little bones left in

D、too many children making noises

She ever being so kind to me. I felt ____________ to help her when she was in trouble.

A、generous

B、obliged

C、virtuous

D、detached