搜题请搜索小程序“爱下问搜题”
问题
单项选择题
英语VENT指（）
A、放大器
B、火灾盘
C、检测元件
D、通气孔
答案
参考答案：D
选择题
The crazy fans _____ patiently for two hours, and they would wait till the movie star arrived.
A. were waiting
B. had been waiting
C. had waited
D. would wait
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单项选择题
水：矿泉水
A．黄河：泥沙
B．青海湖：雨水
C．脊椎动物：鱼
D．火：大火
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