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【简答题】

配对阅读。(请阅读左栏人员的相关问题,然后与右栏的相对应措施相匹配。并把最佳选项的字母 编号写在题号前的括号内。其中两项多余。) Problems Solutions (     )1. Mary's friend wants to copy (抄袭) her homework. (     )2. Jack lost his school bag in the library. (     )3. David's mother is ill, but his father isn't at home. (     )4. Cathy was sitting on the bus when an old man got on. (     )5. Brian saw a purse on the road. And there is some moneyand an address (地址) card with the telephone number of the owner in it. A. She should pretend (假装) to be asleep. B. He should send for a doctor. C. He should keep it and buy some books for himself. D. He should go to the Lost and Found. E. He should call the owner. And tell him / her to get his / her purse back. F. She should offer her seat to the old man. G. She should say 'no' to her friend, and tell him / her it's wrong to do so.

题目标签:多余对应选项
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刷刷题刷刷变学霸
举一反三

【单选题】材料的表观密度所对应的体积包括( )

A.
矿质实体体积
B.
矿质实体体积、闭口孔隙体积
C.
矿质实体体积、闭口孔隙体积、开口孔隙体积、材料颗粒间空隙体积
D.
矿质实体体积、闭口孔隙体积、开口孔隙体积

【单选题】下列各选项正确的是( ).

A.
若收敛
B.
若都收敛
C.
若正项级数
D.
若级数收敛,且an≥bn(n=1,2,…),则级数也