_______ of the students has two books.A、AllB、BothC、EachD、Every
_______ of the students has two books.
A、All
B、Both
C、Each
D、Every
相关考题：
() of the two books holds the opinion that the danger of nuclear war is increasing. A、NoneB、BothC、EitherD、Neither
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–Wow! You’ve got so many clothes.--But _____ of them are in fashion now.A. all B. both C. neither D. none
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将students中的列变量重新命名为： （1）id_number, name, gender, score, has_graduate （2）选出Bob的性别gender，并存入变量bob_gender （3）选出列has_graduate，并存入向量status （4）创建数据框part_df，其中包含前三个学生的所有信息 （5）创建数据框rest_df，包含其余学生的所有信息