Which of the following reflexive pronouns(反身代词)is used as an appositive(同位语)？
A. The president himself will attend the opening ceremony.
B. You think too much of yourself.
C. The boy will be himself in no time.
D. She made herself a fine dress.
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We are faced with the demand that this tax_____.
A. be abolished
B. were abolished
C. were to be abolished
D. must be abolished
Which of the following sentences is INCORRECT？
A. Three weeks was allowed for making the necessary preparations.
B. Tom, more than anyone else, is anxious to go there again.
C. Not only the teacher but also his students object to the change.
D. Both bread and butter was sold out in that grocery.
Which of the following determiners(限定词)CANNOT be placed before both singular count nouns and plural count nouns？
A. some
B. the first
C. a many
D. such
流行病学的描述性研究包括普查、病例报告、对列研究、现况调查。()
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