凡患有()等症的人不宜从事建筑业的工作。
A.高血压
B.气管炎
C.心脏病
D.贫血
E.过敏
参考答案:A, C, D
The government has taken some measures to solve the shortage of electricity, but it may be some time ____________ the situation improves.
A.since
B.when
C.unless
D.before
黄疸病变与下列何脏腑无关:()
A.心
B.脾
C.胃
D.肝
E.以上都不是