. "What         ?"  "I         my key and can't open the door."

   A. happened, lost         B. has happened, lost

C. happens, have lost     D. has happened, have lost

Sarah hopes to become a friend of _____ shares her interests.?

A. anyone   B. whomever  C. whoever  D. no matter who

. Most people in that area objected with little effect____a golf playground there.

A. to build   B. of building   C. to have built     D. to building

We're leaving at six o'clock , and hope _____ most of the journey by lunch time .

A. to do        B. to have done        C. to make         D. to have made

Her pronunciation is as good as, if ____than, her teacher's.?

　　A. no better    B. not better    C. no good    D. not good?

 “I think the teacher is wrong, _____?” “No, I don't think so.”?

　　A. don't you      B. don't I  ?   C. doesn't he      D. doesn't she

_____ with a good education can apply for the job.?

　　A. Who　   B. Whoever 　  C. Anyone 　   D. Who ever

 He will tell you _____ he expects will win such a match.

A. why   B. whom   C. which   D. who

LONDON (Reuters) ---Organic fruit, carried right to the doorstep. That is what Gabriel Gold prefers , and he is willing to pay for it. If this is not possible, the 26-year-old computer technician will spend the extra money at the supermarket to buy organic food.

“Organic produce is always better,” Mr. Gold said. “The food is free of pesticides(杀虫剂), and you are generally supporting family farms instead of large farms. And more often than not it is locally grown and seasonal, so it is more tasty.” Mr. Gold is one of a growing number of shoppers buying into the organic trend, and supermarkets across Britain are depending on more like him as they grow their organic food business. But how many shoppers really know what they are getting, and why are they willing to pay a higher price for organic produce? Market research shows that Mr. Gold and others who buy organic food can generally give clear reasons for their preferences---but their knowledge of organic food is far from complete. For example, small amounts of pesticides can be used on organic produce. And about three quarters of organic food in Britain is not local but imported to meet the growing need. “The demand for organic food is increasing by about one third every year, so it is a very fast-growing market.” Said Sue Flock, a specialist in this line of business.

1. More and more people in Britain are buying organic food because____________.

A. they are getting richer                 B. they can get the food anywhere

C. they consider the food free of pollution    D. they like home-grown fruit

2. Which statement is TRUE according to the passage?

A. Those who buy organic food have a complete knowledge of organic food.

B. Some of the organic food is produced outside Britain.

C. Organic produce is not seasonal and tastes more tasty.

D. Organic products are those which are free of pesticides.

3. The underlined words “organic trend” means____________.

A. higher prices of organic food    B. better quality of organic food

C. rising market for organic food   D. growing interest in organic food

4. The news story is mainly about____________.

A. that more and more people prefer organic food in Britain

B. the production of organic food in Britain

C. the complete knowledge of organic food in Britain

D. good qualities of organic food in Britain

When an ant dies, other ants take it out of the nest, often within an hour after its death. This behavior interests scientists and they wonder how ants know for sure — and so soon — that another ant is dead.

One scientist recently came up with a way to explain this ant behaviour. Dong-Hwan Choe is a biologist, a scientist who studies animals and plants. He found that ants have a chemical on the outside of their bodies that signals to other ants, “I'm dead—take me away” when it is dead.

But there's a question to answer: As we know, if an ant is dead, it stops moving. But when an ant is sleeping or knocked unconscious, it is also not moving. However, other ants don't move the living ant out of the nest. How do they know this ant is not dead? Choe found that ants have another chemical on their bodies, which tells nearby ants something like, “Wait—I'm not dead yet”when it is not dead. Choe suspects that when an ant dies, the chemical that says, “Wait I'm not dead yet”quickly goes away. When other ants detect the“dead”chemical without the“not dead yet”chemical, they move away the body.

To test his theory , Choe and his team put different chemicals on ants. When the scientists used the “I'm dead” chemical, other ants quickly moved the treated ant away. When the scientists used the“Wait—I'm not dead yet”chemical, other ants left the treated ant alone. Choe believes this behavior shows that the“not dead yet”chemical overrides the“dead” chemical when picked up by other ants. And that when an ant dies, the “not dead yet” chemical fades away. Other nearby ants then detect the remaining“dead”chemical and remove the body from the nest.[

Understanding this behavior can help scientists figure out how to stop ants from invading new places and causing problems.

1. What is the function of the first paragraph?

A. Leading the following paragraphs.          B. Showing the main idea of the passage.

C. Introducing the background of the passage.     D. Giving a summary of the passage.

2. Which of the following has the closest meaning to the underlined word “overrides” in the fourth paragraph?

A.is weaker than       B. is stronger than    C. is better than    D. is worse than

3. What can we learn from the passage?

A. Living ants can also be taken away when they are not moving.

B. When an ant dies, it can tell others using a certain chemical.

C. A living ant can pretend to be dead using a special chemical.

D. Ants often use chemicals to communicate with each other.

4. Which of the following descriptions about Dong-Hwan Choe is right?

A. Choe did this study in order to stop ants from invading new places.

B. Choe is a biologist who is only interested in animals, especially in ants.

C. Choe first came up with an idea to explain this ant behavior，and then did some tests to prove his theory.

D. Choe did the research on this ant behavior on his own