He ________ to school last week.[ ]
A. go
B. went
C. goes
D. going
答案:B
新生儿心脏的直径在X线片上(球管标准距离下摄影)为胸部宽度的
A.50%
B.45%
C.55%
D.40%
E.60%
货车车体的弯曲下垂、涨出、倾斜的容许限度是如何规定的?