缺词填空(10分) Sally was a student in a small

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缺词填空(10分)

Sally was a student in a small town. It was going to be her mother’s birthday. She wanted to buy her a present that would be nice and useful but not e       .

She went s     after a quick and simple lunch. After she looked for about forty minutes, she found a shop that was selling cheap umbrellas(雨伞), and she d       to take a black one. She thought, “Mom can carry it when she is w________ clothes of any color.” So she bought a lovely black umbrella and took it to school with her until her class finished. On her way home on the train she felt h       So she went to the buffet car (餐车). She left the umbrella on her s     . But when she returned, it had gone. Sally began to cry. The o_______ passengers(乘客) felt very sorry for her and asked what was the matter. She told them the black umbrella she bought for her mother had gone, and she had to get off at the next station. After the three passengers h______      this , they asked her for her mother’s address(地址) so that(为了) they could send the umbrella to her if someone took it by mistake (弄错) and brought it b       

And now a week passed. Sally g______ a letter from her mother. It said, “Thank you very much for your lovely presents, but why do you send me three black umbrellas?”

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1998年,各国投资联合会国际协议会(InternationalCouncilInvest-tnentAssociations,ICIA)通过了《国际伦理纲领、职业行为标准》。()

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The man moved forward and    looked over the edge,shrinking his shoulders.

A.accurately

B.cautiously

C.brilliantly

D.disappointedly

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浆膜腔积液黏蛋白定性试验的等电点是()

A.6~7

B.7~8

C.3~5

D.8~9

E.5~6

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嵌合体形成的原因可能是( )。

A.卵裂过程中发生了染色体丢失

B.卵裂过程中发生了联会的同源染色体不分离

C.生殖细胞形成过程中发生了染色体的丢失

D.生殖细胞形成过程中发生了染色体的不分离

E.双雌受精或双雄受精

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描述流体运动的拉格朗日法和欧拉法有什么不同点?

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