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【单选题】
服用安眠药过量,宜选用的最佳洗胃液A.
水合氯醛
B.
盐水
C.
碳酸氢钠
D.
高锰酸钾
E.
硫酸镁
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反馈参考答案：
举一反三
【单选题】下列加点词语的解释不正确的一项是( )
A.
猝不及防：猝，突然，出其不意。
B.
迟疑：犹豫；拿不定主意。
C.
哽咽：咽：声音阻塞，多指哭泣。
D.
莫名其妙：名，明白
【单选题】As is often the _______, the h ousewife gives the house a thorough cleaning ________. [ ]
A.
matter; every two days
B.
situation; each second day
C.
same; each two days
D.
case; every second day
【单选题】It has been hypothesized that much of the matter in the universe is 'dark,' i. e. , unseen. Studies have shown that galaxies in many galaxy clusters are moving faster with respect to one another than ...
A.
Measurements of the speed of moving galaxies are extremely unreliable.
B.
The workings of gravitational forces are not particularly well understood.
C.
The aggregate mass of visible stars in the galaxies mentioned above can be estimated with some confidence.
D.
The general composition of unseen matter in the universe has been determined.
E.
Without exception, the galaxies mentioned above move toward one another.
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