六号筛的目数是()
A.60
B.80
C.100
D.200
E.150
参考答案:C
Arriving home, she started with math. She had always been a good math student, but now she was . [ ]
A. struggling
B. improving
C. working
D. complaining
二战结束后,美国的霸权主义政策表现为两种形式,在欧洲是“冷战”,在亚洲是“热战”。战后,美苏之间的“冷战”对抗并未真正爆发大战,其主要原因是[ ]
A.美苏双方势均力敌
B.双方合作多于对抗
C.各国反战运动高涨
D.霸权主义受到遏制