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 in outer space may be trying to get in touch with us. Scientists also have sent radio and television messages on spaceships traveling 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（扫视）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 they stands out from the background noise.

　　Of the 200 billion stars in the Milky Way galaxy（银河星系）, scientists 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（进化）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 support some life.

　　However, many scientists wonder whether intelligent（有智力的）life exists on other planets. Some believe that twenty years of searching without any intelligible messages 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 only about five billion years old, our galaxy is about 20 billion years old. In that time, some scientists think it is likely that civilization（文明）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.

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

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

The underlined word “monitor” in the passage means“ ________ ”.

　　A. find　　　　　　　　　　　　　B. follow

　　C. check　　　　　　　　　　　　 D. form

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.

Have you _____ the book yet?

　 A. find 　 B. discovered  C. invented 　 D. found

Throughout the world, boys and girls prefer to play with different types of toys. Boys typically like to play with cars and trucks, while girls typically choose to play with dolls. Why is this? A traditional sociological explanation is that boys and girls are socialized and encouraged to play with different types of toys by their parents, peers, and the “society”. Growing scientific evidence suggests, however, that boys’ and girls’ toy preferences may have a biological origin.

In 2002, Gerianne M. Alexander of Texas A&M University and Melissa Hines of City University in London surprised the scientific world by showing that monkeys showed the same sextypical toy preferences as humans. In the study, Alexander and Hines gave two masculine toys (a ball and a police car), two feminine toys (a soft doll and a cooking pot), and two neutral toys (a picture book and a stuffed dog) to 44 male and 44 female monkeys. They then assessed the monkeys’ preference for each toy by measuring how much time they spent with each. Their data showed that male monkeys showed significantly greater interest in the masculine toys, and the female monkeys showed significantly greater interest in the feminine toys. The two sexes did not differ in their preference for the neutral toys.

If children’ s toy preferences were largely formed by gender socialization, as traditional sociologists’ claim, in which their parents give “gender appropriate” toys to boys and girls, how can these male and female monkeys have the same preferences as boys and girls？They were never socialized by humans, and they had never seen these toys before in their lives.

61．Traditional sociologists believe boys’ and girls’ toy preferences ________.

A. are passed down from their parents               B. are largely formed in later life

C. have nothing to do with gender socialization        D. have a biological origin

62．The study by Alexander and Hines shows that monkeys________.

A. also have a sex typical toy preference       B. also play toys as humans do 

C. have no toy preferences                  D. like to play different toys at different time

63．Alexander and Hines carried out the study to ________.

A. find more evidence for traditional sociology

B. test the intelligence of monkeys

C. test whether monkeys like to play toys

D. find out why boys and girls prefer different toys

64．According to the study, if given a stuffed dog, ________.

A. only the male monkeys showed interest

B. the female monkeys showed more interest

C. the male and female monkeys showed the same interest

D. neither the male nor the female monkeys showed any interest

65．Masculine toys are mainly intended for________.

A. boys                       B. adult           C. monkeys　           D. girls

—How does the plan ________ you?—Particularly good.

A. find 　     B. think 　  C. strike 　　        D. hit

Experts say that it is not easy to get used to life in a new culture. “Culture shock” is the term specialists use when talking about the feelings that people have in a new environment. “There are three stages of culture shock,” say the specialists. In the first stage, the newcomers like their new environment. Then, when the fresh experience dies, they begin to hate the city, the country, the people, and everything else. In the last stage, the newcomers begin to adjust to their surroundings and, as a result, enjoy their life more.

　　There are some obvious factors in culture shock. The weather may be unpleasant. The customs may be different. The public service systems---the telephone, post office, or transportation---may be difficult to work out. The simplest things seem to be big problems. The language may be difficult.

　　Who feels culture shock? Everyone does in this way or that. But culture shock surprises most people. Very often the people having the worst culture shock are those who never had any difficulties in their home countries and were successful in their community. Coming to a new country, these people find they do not have the same established positions. They find themselves without a role, almost without an identity.

　　They have to build a new self-image.

　　Culture shock gives rises to a feeling of disorientation (迷惘). This feeling may be homesickness. When homesick, people feel like staying inside all the time. They want to protect themselves from the strange environment, and create and escape inside their room for a sense of security. This escape does solve the problem of culture shock for the short term, but it does nothing to make the person familiar with the culture. Getting to know the new environment and gaining experience are the long-term solutions to the problem of culture shock. 

1. When people move to a new country, they _________.

A. will get used to their new surroundings with difficulty

B. have well prepared for the new surroundings

C. will get used to the culture of the country quickly

D. will never be familiar with culture of the country

2.According to the passage, factors that give rise to culture shock include all of the following except __________.

A. language communication              B. weather conditions and customs

C. public service systems                D. homesickness 

3.When people are homesick, they tend to ________.

A. find some people to talk to             B. go outside to have a walk [来源:Z#xx#k.Com]

C. visit their friends far away             D. stay indoors all the time

4.The writer tells us that the best way to overcome culture shock is to _______.

A. protect ourselves from unfamiliar environment    B. develop a strange sense of self-protection

C. get familiar with new culture                  D. return to our own country