过机误差在（）信号前人工校正无效。
A.停车
B.通过
C.侧线
D.减速
参考答案：A
The fact that she was foreign made__________difficult for her to get a job in that country. [ ]
A. so
B. much
C. that
D. it
丙氨酸氨基转移酶（ALT）增高最明显的疾病是（）
A.急性心肌梗死
B.肝硬化
C.急性病毒性肝炎
D.肝癌
E.急性重症肝炎
