“大萧条”时期,主要资本主义工业国都采取了一系列增加就业的措施。其中美国实行的主要措施是[ ]
A.兴办公共工程
B.发展军事工业
C.调整农业生产
D.加紧殖民掠夺
答案:A
He's going to hospital in Beijing for special ________, and there they have good medical care. [ ]
A. training
B. cure
C. disease
D. treatment
什么是琴弦的横振动?