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21.Children’s brains can not develop ____ they lack protein(蛋白质). A. since B. when C. because D. unless 22. Persons with whom we can _____our innermost feelings are our closest friends. A. tell B. share C. value D. respect 23. Without facts, we can’t form a correct opinion, for we need to have actual knowledge ____ our thinking. A. which to be based on B. which to base on C. on which to base D. which to base 24.Nearly all the trees have seeds that fall to the ground, ____ and eventually produce new seeds. A. taking root B. take root C. took root D. to take root 25.－Are you in a hurry? －No, in fact, I have got plenty of time. I_____ wait. A. must B. can C. may D. should 26.－Could you lend me that book you____ me about when I telephone you? －No, I’m sorry, I can’t. I gave it to a friend. A. were telling B. would tell C. had told D. had been telling 27.The news was a terrible blow to her, but she will ____ the shock soon. A. get out B. get through C. get off D. get over 28.Actually, girls can be ____ they want to be just like boys, whether it is a pilot, an astronaut, or a general manager. A. wherever B. however C. whatever D. whoever 29. ____ he met with difficulties did he realize the importance of our help.
A. Even though B. Never until C. Only before D. Ever since 30.－That’s me when I graduated from college. See what I look like now! －Why not take up exercise to improve your ______. A. look B. form C. shadow D. figure 31. It is in Qingdao. you' re going to pay a visit to this kind of washing machine is produced. A. 不填；that B. where; which C. 不填; where D. that; which 32. It is said that ____ kite was invented in ____ ancient China. A. the; an B. a; the C. the; 不填 D.不填； 不填 33. It was so large a room that a hundred people looked ___ in it. A. losing B. lost C. to lose D. having lost 34. －Excuse me, where is the tea- room? －It’s right over there. Can I help you with ____? －No, thanks. A. anything B. nothing C. something D. everything 35.—Would you like to go to the concert with me tonight? －______. A. No way. I’ll do my homework B. It is a pleasure C. Well, I feel like staying at home D. I have no time II: Close “This Friday we’ll have the yearly Egg Drop Challenge,” said our science teacher, Mr. Baker. “ You can work alone with a parter.” My friend, Cassie, and I smiled at each other. We always worked on projects _36_. The _37_ of the Challenge was simple— to build a projective container to keep an egg from breaking when 38 the stadium wall. I made my sandwich that afternoon while waiting for Cassie. 39 the butter-cream gave me an idea. “I have a brilliant design for our __40_ container!” I said when Cassie arrived. “We can __41__ the egg with some butter cream. “Why not put the egg in a basket with a parachute(降落伞) __42_ ?” Cassie rolled her eys.” The parachute is better than that stupid idea.” I couldn’t believe it. Of course we’d had our little _43_ in the past, but she’d never called any of my ideas “__44__” before. “Then I’ll build mine and you build yours!” __45_ words had been out, our friendship was challenged. When Friday finally arrived, I had to 46 Cassie’s Egg Force One looked pretty good. 47, my Egg-cellent Egg Cream didn’t look quite scientific. We kids carried our containers up three stadium steps and dropped them over the side wall. Those whose eggs broke were out; those whose egg survived 48 three more steps and dropped them again. This would go on till the last egg broke. After four rounds, only Cassie and I were 49 . I let go of my box. I heard someone say “ew” after seconds. Had my egg broken? I raced down the 50. The sidewalk was dotted with egg shell(蛋壳) from those 51 drops. Finally I found my little Egg-cellent Egg Cream. “That looks like egg drop soup, Laura,” Cassie said. She was holding her Egg Force One. My 52 raced. Had she won? I looked at her basket. 53. “My egg bounced 54,” she explained, pointing to a broken shell. “A tie(平局),” Mr Baker said. Cassie looked at me, and her glare 55. I laughed. She smiled… 36. A. patiently B. silently C. together D. alone 37. A. function B. goal C. reason D. result 38. A. rolled down B. pushed against C. thrown at D. dropped over 39. A. Spreading B. Boiling C. Baking D. Holding 40. A. butter B. sandwich C. cream D. egg 41. A. project B. replace C. carry D. mix 42. A. followed B. covered C. attached D. supported 43. A. ideas B. fights C. worries D. challenges 44. A. wrong B. stupid C. brilliant D. scientific 45. A. Since B. While C. But D. And 46. A. explain B. deny C. admit
