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Can you put an appropriate preposition into each gap in the sentences?1. I noticed she avoids making any reference _______ her first husband in her latest book.2. The railway industry must keep pace with the growing demand ______ transportation.3. Ann has a fine reputation for being an old hand ______ cooking Italian food.4. Reading letters _________ childhood friends often reminds me of the days we spent together collecting sea-shells on the beach and gathering wild fruit in the woods.5. Bill’s lecture aroused our interest _____ IT, i.e. information technology.6. Professor Smith’s devotion______ teaching has made a deep impression on all the students in her department.7. My parents called me yesterday offering me their congratulations ______ my good record.8. Having lived in this neighborhood for about ten years, the old man valued his friendship _________ his neighbor Peter.

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something, or something, kind of / sort of, more or lessCan you put into each gap an appropriate expression from the above list to make the sentences sound less definite?1. We’re expecting 150 guests at the party, _______________.2. I’ve __________________ heard of him, but I don’t know who he is.3. _______________ has happened to worry him but we don’t know what it is.4. He wasn’t sure why but he felt _________________ sorry for her.5. It will take _______________ a whole day to paint the ceiling.6. I thought I heard Mom say Martin saved a child from drowning ________________.

秩和检验属于非参数检验。

A. 对
B. 错

符合参数检验条件的资料也可用非参数检验方法进行统计推断,但统计效能偏低。

A. 对
B. 错

在配对符号秩和检验中,对两个符号相反但绝对值相同的差值编秩时,需要编顺序秩次。

A. 对
B. 错

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