中美战略竞争目前主要聚焦在( )地区,归根结底还要看两国在亚太地区的朋友多寡。
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He speaks English as If he ________ an Englishman.
A. was
B. were
C. had been
D. has been
未来几年,( )依然是中欧关系的主旋律
A. 相互竞争
B. 合作共赢
C. 优势互补
D. 融合发展
The doctor suggested that he _______ lose his weight.
A. should try to
B. would try to
C. tried to
D. have tried to
砷盐的检查第二法又称为()
A. 二乙基二硫代氨基乙酸银法
B. 二乙基二硫代氨基甲酸银法
C. 二甲基二硫代氨基乙酸银法
D. 二乙基二硫代氨基丙酸银法