【正文】 obably hit the earth in about 10 years and scientists all over the world are thinking about possible ways to ________it from happening. Which of the following is not OK? A. protect B. stop C. keep D. prevent 18. _______ cars when you cross the busy street. Which of the following is not OK? A. Watch out for B. Look out for C. Watch over D. Be careful of 19. _______ you feel exhausted after the long tiring journey, you may as well take a good rest at home. A. So that B. In that C. Now that D. In order that 20. Be careful when you open an unknown document. It might contain the deadly virus which could entirely ______ your puter system in a minute. A. break down B. crash C. block out D. dissolve 21. My goodness! I failed again in the puter test. ________. The world is not at an end. A. Look up B. Pick up C. Cheer up D. Keep up 22. Nobody in the family knows for sure why ________ A. it broke out fierce quarrels between the newly wedded couple. B. the newly wedded couple often broke out fierce quarrels C. fierce quarrels often broke out between the newly wedded couple D. fierce quarrels were often broken out between the new wedded couple 23. Astronauts in a spaceship have to _______weightless conditions _______are quite different from ______ on the earth. A. do with。 which。 those B. deal with。 that。 that C. face。 which。 those D. solve。 where。 what 24. The pull of gravity depends upon size, _______, upon mass. An object, whether its mass is big or small on the earth, ________in weightless conditions, like the outer space A. or rather。 floats B. rather than。 flies C. to be more exact。 flies D. other than。 floats 25. If the sun’s rays were entirely _______, there would be dramatic changes in the climate on the earth, and the result could be disastrous to the human race. A. covered out B. broken out C. blocked out D. left out 第二部分 完形填空（共 20 小題；每小題 1． 5 分，滿分 30 分） 閱讀下面短文，從短文后各題所給的四個選項（ A、 B、 C 和 D）中，選出可以填入空白處的最佳選項，并在答題卡上將該項涂黑。 In tradition education , the teacher may feel that the students are not very grown up. 26 ,teachers are older than students, 27 teachers feel that students are 28 and do not know much about the 29 . The teachers feel that they 30 tell the students what to do most of the time, and that they must also 31 the students study specific(具體的 )things. In 32 education, the teachers’ 33 are very different. These teachers feel that the students are 34 first, and students second. They 35 the students to be 36 for the things that the do, just as adults 37 . A student’s idea and feelings are just as important as the 38 . The teacher 39 the students to decide 40 they want to do, and does not make them study what they do not want 41 . The teacher lets them 42___ what to study and how 43 to study . It’s very important for the 44 to show how he or she feels 45 the students. 26. A. Usually B. Indeed C. Besides D. Actually 27. A. and B. however C. still D. yet 28. A. old B. young C. stupid D. clever 29. A. universe B. culture C. world D. knowledge 30. A. can B. must C. may D. will 31. A. force B. ask C. order D. make 32. A. open B. traditional C. strict D. high 33. A. feelings