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【单选题】
按照卫生部的规定，婴儿不必在1岁内完成的疫苗接种是（）A.
卡介苗
B.
脊髓灰质炎疫苗
C.
破类毒素
D.
麻疹和乙肝病毒疫苗
E.
乙型脑炎疫苗
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反馈参考答案：
举一反三
【单选题】Senator Smart, who understands economic principles, is trying to convince workers in her district that trade with other countries is beneficial. Senator Smart should argue that trade can be beneficial
A.
only if it allows us to obtain things that we couldn't make for ourselves.
B.
because it allows specialization, which increases total output.
C.
to us if we can gain and the others involved in the trade lose.
D.
in only a limited number of circumstances because others are typically self-interested.
【简答题】It’s the place where smart people make smart machines work even smarter. But for the people who work in it, Silicon Valley (硅谷) is more than just a high technology hothouse. It’s also in the heart of ...
【简答题】旅游资源包括的范围很广，种类繁多，按照其形成的条件，可将旅游资源分为____旅游资源和人文旅游资源。
【简答题】农业生态旅游资源包括田园风光生态旅游资源、（）旅游资源和（）生态旅游资源等。
【单选题】It was a fixing sight: there, in the Capitol itself, a U.S. Senator often mocked for his halting, inarticulate speaking, reached deep into his Midwestern roots and spoke eloquently, even poetically, a...
A.
annoyed.
B.
amazed.
C.
agonized.
D.
agitated.
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