单项选择题
When payments are made every week the usual word is（）.
A.salaryB.payC.wageD.income
多项选择题 职业人群健康监护分为（）、离岗后医学随访检查以及应急健康检查等5类。
单项选择题 You had better have more（）of catching the train if you got a bus to the station instead of walking.
单项选择题 （）you have finally answered the question，perhaps we'd better ask someone else.
