皮皮学，免费搜题
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搜题
【单选题】
硼钢的抗拉强度可以达到()A.
1200mpa-1400mpa
B.
1200mpa-1300mpa
C.
1300mpa-1400mpa
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】What do some scientists say about taking medicines for the common cold according to the passage?
A.
It is good for people.
B.
It actually does more harm than good.
C.
It can help people keep healthy.
D.
It can give them more energy.
【单选题】Some people viewed the findings with caution, noting that a cause-and-effect relationship between passive smoking and cancer remains______ .
A.
to be shown
B.
to have shown
C.
to have been shown
D.
being shown
【单选题】------How do you like the film we saw yesterday ? ------________, I am pleased with it though some parts are boring.
A.
At last
B.
In general
C.
After all
D.
Of course
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