Questions 11 to 18 are based on the conversation you have just heard.
A. Many guests didn’t give a performance at the party.
B. Many guests didn’t show their faces. They are masks.
C. The party wasn’t held, because many guests didn’t come.
D. The party was held last night, but many guests didn’t come.
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听下面5段对话或独白。每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。听每段对话或独自前,你将有5秒钟的时间阅读各个小题;听完后,各小题将给出5秒钟的作答时间。每段对话或独白读两遍。 What time does the department store close
At six.
B. At nine.
C. At sever.
已有定义:char c="; int a=1,b;(此处C的初值为空格字符),执行b=!c&&a;后b的值为______。
用福尔哈德法测定Ag+,滴定时必须剧烈摇动。用返滴定法测定Cl-时,也应该剧烈摇动。( )
A. 对
B. 错
The truck driver is__________________(对这起交通事故负全责).