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阅读理解。 Dear World, My son starts school today. It’s going to be strange and new to him for some time. And I wish you would treat him gently. You see, up to now, he has been the king of his own room. He has been the boss of the backyard. I have always been around to treat his wounds* and to comfort* his feelings. But now things are going to be different. This morning, he’s going to walk down the front steps, wave his hand and start on his great adventure*. So, World, I wish you would take him by the little hand and teach him the things he will have to know. Teach him there are heroes, leaders and friends in this world. Give him quiet time to think over the mystery of birds in the sky, clouds in the sun and flowers on the green hill. Teach him to believe in his own ideas, even id everyone else tells him they are wrong. Teach him to stand and fight if he thinks he is right. Teach him never to put a price on his heart and soul*. Teach him gently, World, but don’t coddle* him, because only the test of fire makes fine steel. This is a big order, World, and see what you can do. He’s such a little fellow*. Mother 1. From the second paragraph we know that the writer’s son _______. A. is often ill B. is smart C. has been working at home D. has been taken good care of at home 2. The writer wishes her son _______. A. to treat others gentlyB. not to feel strange at school C. to develop* some good habits D. to be better than other children at school 3. What does the writer wish her son to do when someone says he is wrong? A. He should not give up his idea easily. B. He should listen to others and change his idea. C. He should ask the people around for advice. D. He should ask her what to do. 4. From the passage, we know the writer _______. A. is not worried about her son at all B. is excited about her son’s going to school C. writes his passage to other parents D. doesn’t want her son to go to school 5. Which is the best title of this passage? A. My Son Is Great B. How To Teach My Son C. A Mother’s Letter To The World D. Don’t Be Rude To My Son
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苯妥英钠
B.
乙琥胺
C.
普鲁卡因胺
D.
苯巴比妥
E.
地西泮
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A.
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B.
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苯妥英钠
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乙琥胺
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普鲁卡因胺
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苯巴比妥
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B.
DNA链的断裂,一定诱发同源重组
C.
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D.
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B.
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同源重组过程中,一定发生DNA链的断裂
B.
DNA链的断裂,一定诱发同源重组
C.
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D.
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同源重组只发生于基因之间的DNA区段,而不会发生在基因内部
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C.
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