不定项选择

When northern China is still gripped in a world of ice and snow, flowers are already blooming in the balmy south.

A．正确
B．错误

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单项选择题

夜间打开日光灯，会引起主动红外报警器的（）。
A、误报警；
B、漏报警；
C、仍正常工作；
D、以上都不对。

单项选择题

If you want to tell your audience where you’re going and where you’ve been, which type of slides you can choose to use?
A、Title slides
B、Navigation slides
C、Agenda slides
D、Program detail slides