(单选题)40: It is politely requested by the hotel management that radios ____________after 11 o'clock at night. A: were not played B: not to play C: not be played D: did not play ...

(单选题)22: ____________we need more practice is quite clear. A: What B: That C: Which D: When ...

(单选题)36: ____________the English examination I would have gone to the concert last Saturday. A: In spite of B: But for C: Because of D: As for ...

(单选题)30: Either John or his friends ____________to blame for the bad results. A: are B: is C: was D: has been ...

(单选题)18: Copper as well as most metals ____________. A: is a good conductor B: is a good insulator C: are good conductors D: are good insulators ...

(单选题)12: The Smith's family, which____________rather a large one,____________very fond of their old house. A: were ... were B: was ... were C: were ... was D: was ... was ...

(单选题)6: ____________, the rivers were open and navigable. A: Being summer B: Been summer C: To be summer D: It was summer ...

(单选题)14: 复函数在一点有极限是是在该点连续的（） A: 充分条件 B: 必要条件 C: 充要条件 D: 既非充分也非必要条件 ...

(单选题)8: 下列说法中错误的是：一个复数的n次方根（） A: 有n个 B: 模相等 C: 辐角主值成等差数列 D: 和为0 ...

(单选题)22: z0是f(z)的m（m为大于1的正整数）级极点，那么z0是f(z)导数的（） A: 可去奇点 B: m+1级零点 C: m+1级极点 D: 本性奇点 ...