He was reading a novel ________ the story reminded him of ________ he had seen during the last war.

A. when, what B. that, what 　 C. whose, that 　 D. while, which

The president spoke at the business meeting for nearly an hour without________his notes.

A. bringing up B. referring to　　 C. looking for 　 D. trying on

For more than twenty years scientists have been searching for signs of life on other planets. Most of these searches have been done over the radio. The hope is that someone on outer space may be trying to get in touch with us. Scientists also have sent radio and television messages on spaceships travelling through space, on the chance that someone may be receptive to such messages.

Scientists are using powerful radio telescopes to listen to signals from about 1,000 stars, all within 100 light years of earth. In addition, they will scan the entire sky to “listen” for radio messages from more distant stars. Using a computer, they will be able to monitor more than eight channels at one time. Scientists are looking for any signal that stands out from the background noise.

Of the 200 billion stars in the Milky Way galaxy(银河星系), scientist find that five percent are like our sun. Perhaps half of them have a planet like earth. Such a planet would be a reasonable distance from the star for temperatures to be right for the evolution of life. Based on the inhabitable (that can be lived in) planets in our galaxy, most scientists agree that chances are likely that one or more of these planets supports some life.

However, many scientists wonder whether intelligent life exists on other planets. Some believe that twenty years of searching without any intelligible message shows that no one is out there. They say that the evolution of intelligence comparable to ours is unlikely.

Other scientists believe that our search hasn’t been long enough to rule out the possibility that intelligent life exists in our galaxy. Although our sun family is about 20 billion years old. In that time, some scientists think it is likely that civilizations much more advanced than ours have developed. Perhaps these civilizations send us no signals; perhaps we have not recognized the signals they have sent us. If we hope to find intelligent life, these scientists believe that we have to keep looking.

1. According to the passage, how many planets in our galaxy might be inhabitable?

A. 5 billion.　　　　　　 B. 10 billion.

C. 15 billion.　　　　　　 D. 200 billion.

2. The first paragraph in this passage is mainly about 　　　　 .

A. how scientists are looking for signs of life on other planets

B. why scientists are looking for signs of life on other planets

C. where scientists are looking for signs of life on other planets

D. when scientists are looking for signs of life on other planets

3. The underlined word “monitor” in the second paragraph means “　　　　 ”.

A. find　 B. follow　 C. check　 D. form

4. Which of these statements is TRUE based on the information in the passage?

A. The earth is one of the oldest planets in our galaxy.

B. Most scientists believe that there is intelligent life on other planets.

C. Scientists are trying different ways to find signs of life on other planets.

D. Scientists don’t believe that there might be life on other planets.

I _________________________(后悔告诉) her the truth. (regret)

Don’t have the clock ______ , Your father is sleeping.

　 A. rings 　 B. rang

　 C. ring 　 D. ringing

October 1, 1949 was the day ________ the People’s Republic of China was founded.

A. which　　 　　　　　　　 B. when

C. where　　　 　　　　　　　　 D. in which

He is a strange man. He has _____ frinds.

A. a few 　 B. little　　 C. a little 　 D. few

The result was far beyond______ we had expected, ________ brought great joy to

every one of us.

A. that; which B. than; that　 C. what; what D. what; which

Do you know　　 he could have dealt with, if he had not passed the test.

　 A．what　　　 B．how　　　　 C．where　　　 D．why

I_____that you could come to help me out of the trouble.I am quite wrong.?

A.expect　　　　　　　　　　　　　 B.expected?

C.would expect　　　　　　　　　　 D.had expected