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【单选题】
当今的世界是开放的世界,中国的发展离不开世界,实行对外开放是我国的一项基本国策,坚持这一国策的立足点是A.
内外联动，互惠互利
B.
多元平衡，共同发展
C.
相互借鉴，求同存异
D.
独立自主，自力更生
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皮皮学刷刷变学霸
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【简答题】Please wait here. I'll be back in ______ hours. A) two and half an B) two and a half C) half and two D) two a half
【单选题】听力原文：Today is the last day of this term, I have two exams. So I worked for two hours last night, half on mathematics, half on psychology. (26)
A.
I spent an hour each on psychology and mathematics.
B.
I studied mathematics twice as long as psychology.
C.
I worked for four hours last night.
D.
I studied for all but two hours last night.
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