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【单选题】
燃烧0.1 mol两种气态烃的混合物，生成3.58 L CO 2 （标准状况）和3.6g H 2 O，则混合气体中 [ ]A.
一定有甲烷
B.
一定有乙烷
C.
一定无甲烷
D.
一定有丙烷
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皮皮学刷刷变学霸
举一反三
【单选题】I don't think the number of people ______ this happens is very large.
A.
when
B.
to whom
C.
that
D.
of which
【单选题】听力原文：M: I don't think having big parties is a mistake. I like big parties. I think we should pay back our friends who have invited us to their parties. W: But big parties are so impersonal. I think we...
A.
She feels small parties are very impersonal.
B.
She feels big parties are very personal.
C.
She feels she has to pay much money to hold parties.
D.
She dislikes many people at home at the same time.
【简答题】It is very difficult to know people and I don't think one can ever really know any but one's own countrymen.
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