Scientists who try to predict earthquakes have gotten some new helpers recently—animals.

　　That’s right, animals. Scientists have begun to understand what farmers have known for thousands of years. Animals often seem to know in advance that an earthquake is coming, and they show their fear by acting in strange ways. Before a Chinese quake in 1975, snakes awoke from their winter sleep early only to freeze to death in the cold air. Cows broke their halters (缰绳) and tried to escape. Chickens refused to enter their cage. All of this unusual behavior, as well as physical changes in the earth, warned Chinese scientists of the coming quake. They moved people away from the danger zone and saved thousands of lives.

　　One task for scientists today is to learn exactly which types of animal behavior predict quakes. It’s not an easy job. First of all not every animal reacts to the danger of an earthquake. Just before a California quake in 1977, for example, an Arabian horse became very nervous and tried to break out of his enclosure. The Australian horse next to him, however, remained perfectly calm. It’s also difficult at times to tell the difference between normal animal restlessness and “earthquake nerves”. A zoo keeper once called earthquake researchers to say that his cougar had been acting strangely. It turned out that the cat had an upset stomach.

　　A second task for scientists is to find out exactly what kind of warnings the animals receive. They know that animals sense far more of the world than humans do. Many animals can see, hear, and smell things that people do not even notice. Some can sense tiny changes in air pressure, gravity, or the magnetism of Earth. This extra sense probably helps animals predict quakes.

　　A good example of this occurred with a group of dogs. They were shut in an area that was being shaken by a series of tiny earthquakes. (Several small quakes often come before or after a large one.) Before each quake a low booming sound was heard. Each boom caused the dogs to bark wildly. Then the dogs began to bark during a silent period. A scientist who was recording quakes looked at his machine. It was acting as though there were a loud noise too. The scientist realized that the dogs had reacted to a booming noise. They also sensed the tiny quake that followed it. The machine recorded both, though humans felt and heard nothing.

In this case there was a machine to monitor what the dogs were sensing. Many times, however, our machines record nothing extraordinary, even though animals know a quake is coming. The animals might be sensing something we measure but do not recognize as a warning. Discovering what animals sense, and learning how they know it is a danger signal, is a job for future scientists.

1.Through the passage the writer hopes to explore __________.

2. During an earthquake in China in 1975, _________.

3.Which of the following is one of earthquake nerves according to the passage?

4.The scientists did an experiment with a group of dogs to _________.

Barbara is easy to recognize as she’s the only of the women who ____ evening dress.

　　A.  wear  B.  wears  C.  has worm  D.  have worm

________ him before, I didn't recognize him.

I found out one time that doing a __36____for someone could get you into a lot of trouble．I was in the eighth grade at the time, and we were having a final test．During the test, the girl sitting next to me ___37____ something, but I didn’t understand．So I __38______ her way and found out that she was trying to ask me if I had an extra pen．She showed me that hers was ____39_____ and would not write．I happened to have an extra one, so I took it out of my pocket and ____40_____ it on her desk．

Later, after the test papers had been turned in, the teacher asked me to stay in the room when all the other students were____41_____．As soon as we were alone she began to talk to me about ____42____ it meant to grow up; she talked about how important it was to____43____ your own two feet and be responsible for your own ____44____．For a long time, she talked about honesty and emphasized the fact ____45____ when people do something____46____, they are really cheating themselves．She made me ____47____ that I would think seriously about all the things she had said, and then she told me I could leave．I walked out of the room ____48____ why she had chosen to talk to me about all those things．

____49____, I found out that she thought I had cheated on the test．When she saw me lean over to talk to the girl next to me, it looked as if I was copying answers ____50____ the girl’s test paper．I ___51____ to explain about the pen, but all she____52____ say was that it seemed very strange to her that I hadn’t talked of anything about the pen the day she talked to me ____53____ after the test．____54____ I tried to explain that I was just doing the girl a favor by letting her use my pen, I was sure she ____55____ to believe that I had cheated on the test．

1.A．help                B．hand              C．favor           D．fever

2.A．whispered             B．talked             C．told            D．spoke

3.A．turned over         B．came over           C．leaned over        D．looked over

4.A．out of sight      B．out of work     C．out of place      D．out of ink

5.A．place           B．put                  C．gave            D．lent

6.A．punished              B．dismissed           C．praised             D．parted

7.A．what                 B．that                C．which             D．how

8.A．stand up                 B．stand on        C．stand for          D．stand by

9.A．attitude           B．activity             C．action             D．behavior

10.A．what                B．if                  C．that                 D．where

11.A．honest　　        B．dishonest　　    C．modest　　        D．disappointed

12.A．promise　　                                       B．permit　           C．recognize　　    D．prove

13.A．wandering　　　                                   B．reflecting　　     C．understanding      D．wondering

14.A．Long before　     B．Therefore　        C．Ever before　     D．Later on

15.A．of            B．in                     C．from             D．on

16.A．managed　　　　B．planned　　      C．tried　　　     D．promoted

17.A．could　　     B．would　　           C．can                                   D．will

18.A．right　　　　B．only　　　              C．slight　　　     D．once

19.A．After　　　   B．Until　　               C．As if　　                              D．Even if

20.A．remained　　      B．continued　  C．kept　　　　         D．wanted