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【单选题】
患者，女，45岁，有心肌缺血病史，经治疗后几年来一直健康。近日突然出现心慌，气短，数分钟后能自然缓解，如此每日可发作数次，发作时常伴有心绞痛的症状，经心电图检查诊为阵发性室上性心动过速，此时最好选用哪种药物治疗A.
普鲁卡因胺
B.
硝苯地平
C.
维拉帕米
D.
索他洛尔
E.
普罗帕酮
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举一反三
【单选题】The little boy wants to say_____ he has got ready for everything.
A.
what
B.
that
C.
why
D.
when
【单选题】In the center of the lake are two islands, one of which is ______, if not larger than, the other. [ ]
A.
twice as large
B.
as twice large
C.
twice as large as
D.
as twice large as
【单选题】Which is NOT the point of the example of the Pacific Islands?
A.
The poor community has shaken off poverty and people are well-fed now.
B.
Obesity is becoming a problem in the developing world too.
C.
Excessive weight increase will cause no less harm than the food shortage.
D.
The problem of overweight emerges very fast.
【单选题】There are solid reasons for China to claim ownership of the Diaoyu Islands, which lie about 200 miles the eastern coast of our country.
A.
to
B.
on
C.
off
D.
of
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