选择题：No sooner _______ than they began to work.(A)they

题目内容：

No sooner _______ than they began to work.
(A) they had arrived
(B) they would arrive
(C) had they arrived
(D) would they arrive

参考答案：

21. 成年人的主要造血部位是( )(本题2.0分)A、肝脏B、脾脏C、胸腺D、扁骨及长骨近

21. 成年人的主要造血部位是( )(本题2.0分)A、肝脏B、脾脏C、胸腺D、扁骨及长骨近端骨骺处骨髓

“This house is more ____ than the federal government!” Mac complained to his par

11. 包装上不须印有规定标志的是( )。(本题2.0分)A、麻醉药品B、非处方药C、处方药D、外用药品E、二类精神药品

数据库管理系统(DBMS)是 A.数学软件 B.应用软件 C.计算机辅助设计 D.系统软件