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Part III Cloze Directions: There are 10 blanks in the following passage. For each blank there are four choices marked A, B, C, and D. You should choose the ONE that best fits into the passage. We live in the "computer age". Just 41 years __41 __ , computers couldn't do much. They were very big and expensive. They used a lot of energy. Only __42__ people were interested __43__ them. Today computers are smaller and cheaper. They can do __44__ difficult work. Computers become important __45__ many reasons. They work faster than man and make few mistakes. They can "remember" much information. A computer can do millions of problems __46__ a few seconds. A person might __47__ years to work out so many problems. People now use computers in nearly every kind of work. Computers are very useful and the use of computers __48__ growing. More computers mean more jobs for people, because people __49__ to run and mend them. Would you like to learn __50 __ to run a computer? 41. A. early B. ago C. late D. after 42. A. few B. little C. a few D. a little 43. A. in B. with C. on D. by 44. A. and B. so C. but D. or 45. A. in B. by C. for D. on 46. A. with B. on C. at D. in 47. A. need B. get C. want D. make 48. A. are B. is C. has D. have 49. A. may B. must C. should D. need 50. A. why B. what C. how D. when
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举一反三
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抑制二氢叶酸合成酶
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抑制二氢叶酸还原酶
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参入 DNA 的合成
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抑制 β- 内酰胺酶
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过氧化物酶
【单选题】TMP的作用机制是( )
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抑制二氢叶酸还原酶
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抑制二氢蝶酸合成酶
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抑制叶酸还原酶
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双重阻断叶酸合成
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抑制 DNA回旋酶
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抑制二氢叶酸合成酶
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抑制DNA回旋酶
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抑制二氢叶酸还原酶
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抑制氧化酶
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影响细胞膜通透性
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B.
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C.
前者作用于二氢叶酸合成酶,后者作用于二氢叶酸还原酶
D.
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曹滕
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曹操
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曹丕
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曹植
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曹芳
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曹操
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两眉之间
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眼角两侧
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嘴角两旁
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眼睛周围
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曹芳
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曹操
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曹丕
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容易发展为重症肝炎
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容易发生早产,胎儿不易存活
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