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【单选题】
婴儿期常见心力衰竭的原因是:( )A.
房间隔缺损
B.
室间隔缺损
C.
法洛四联症
D.
风湿性心脏病
E.
急性肾炎
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反馈参考答案：
举一反三
【判断题】The federal government may prevent a company from adding products through acquisitions if acquisition threatens to lessen competition.
A.
正确
B.
错误
【单选题】He was watching her doing it with a ________ look on her face, as if to say that she would not change her mind. [ ]
A.
determining
B.
determined
C.
sceptical
D.
secure
【单选题】When he spoke of death, she had a _____ look on her face.
A.
scary
B.
sacred
C.
scared
D.
secret
【单选题】He was watching her doing it with a ________ look on her face, as if to say that she would not change her mind.
A.
reliable
B.
determined
C.
stubborn
D.
straight
【判断题】To keep the established customer is helpful for the company to prevent its competitors from entering the market.
A.
正确
B.
错误
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