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【单选题】
下列情形中，有利于火灾时缩短人员疏散时间的是（ ）。A.
正常照明转换为应急照明
B.
背景音乐转为火灾应急广播
C.
疏散通道上的防火卷帘落下
D.
自动喷水灭火系统喷头启动洒水
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反馈参考答案：
举一反三
【单选题】—What do you think of living _______ in the big flat? —I think I will feel __________.
A.
on your own, alone
B.
by yourself, alone
C.
alone, lonely
D.
lonely, alone
【单选题】--_______________? -- Orange, I think.
A.
What is it
B.
How is the food
C.
What colour do you think it is
D.
Is there any fruit around here
【简答题】苦杏仁苷属于下列何种苷类
【单选题】— Do you think it's a good idea to make friends with my students? — _____, I do. I think it's a great idea. [ ]
A.
Really
B.
Obviously
C.
Actually
D.
Generally
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