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【判断题】
电泳实验中所用电压为3~5V/cm。()A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】将图示中左图1编辑成为右图2，最快捷、方便的方式是（）。
A.
使用“延伸（ExtenD.”、“复制（Copy）”命令
B.
使用“镜像（Mirror）”、“复制（Copy）”命令
C.
使用“拉伸（Stretch）”、“复制（Copy）”命令
D.
使用“缩放（ScalE.”、“复制（Copy）”命令
【单选题】When did the boy go to bed?
A.
After the TV play was over.
B.
Berore the TV play was over.
C.
Before the TV news was over.
【单选题】听力原文：M: Did you watch the play on TV last night? W: Well, I had intended to, but I changed my mind at the last minute and went to a concert instead. Q: What did the woman do last night? (16)
A.
She watched TV.
B.
She read a play.
C.
She saw a film.
D.
She went to a concert.
【单选题】听力原文：M：Did you like the TV play last night? W：Considering its interesting name，we were expecting a much better TV play． Q：What is the woman's opinion of the TV play? (14)
A.
Better.
B.
Exciting.
C.
Disappointing.
D.
Interesting.
【单选题】使用缩放(Scale)命令缩放图形时,在提示输入比例的时候,输入r。然后指定缩放的参照长度分别为1、2,则缩放后的比例值为( )
A.
0.5
B.
1
C.
2
D.
4
【简答题】A．Play s, order pizza and dance. B．Play s, watch TV and chat. C．Watch TV, sing and dance. D．Chat, sing and dance.
【单选题】When did the boy go to bed?
A.
After the TV play was over.
B.
Before the TV play was over.
C.
Before the TV news was over.
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