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【单选题】
下列仪器中能直接用酒精灯加热的是（ ） ①试管 ②量简 ③蒸发皿 ④烧杯 ⑤集气瓶 ⑥燃烧匙．A.
①③⑥
B.
②④⑥
C.
①③⑤
D.
①④⑥
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举一反三
【单选题】After reading the passage, how much do you know about the compound near Waco?
A.
About 51 people lived in the compound at the time of the event in 1993.
B.
It consisted of a main structure and a bunker.
C.
It was built of stone.
D.
It was a schoolhouse.
【判断题】The price earning ratio (PE) is a widely watched measure of how much the market is willing to pay for $1 of earnings from a firm.
A.
正确
B.
错误
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