皮皮学，免费搜题
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搜题
【单选题】
哮喘急性发作时,缓解气道痉挛首选的药物是A.
糖皮质激素
B.
β2受体激动剂
C.
茶碱类
D.
白三烯
E.
酮替芬
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Your sentence needs a little ___.
A.
being correct
B.
correcting
C.
to be correcting
D.
to correct
【单选题】Their idea sounds great . Which of the following is correct for the underlined word in the sentence?
A.
/Eri:t/
B.
/Er$t/
C.
/Ere0t/
D.
/Er0t/
【单选题】Which statement is correct aboutsubtopic sentence?
A.
A subtopic sentence is similar to a topic sentence.
B.
A subtopic sentence also states an opinion that needs support.
C.
A subtopic sentence also has two parts: the limited topic and the controlling idea.
D.
All of them.
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