网上银行支付模式的优点是（）
A.安全性高
B.款项支出、收取的速度快
C.付款人无需告诉收款人汇出账户的信息
D.以上都是
参考答案：D
Many parents feel worried about whether the kids will adjust to _____ from them. [ ]
A. being away
B. be away
C. having been away
D. had been away
长期接触氯乙烯作业的工人可能导致（）
A.皮肤癌
B.间皮瘤
C.膀胱癌
D.白血病
E.肝血管肉瘤
