产后发热外感风热之邪治宜选用（） A.荆芥四物汤 B.九味羌活汤 C.桂枝汤 D.银

用所给动词正确形式填空

小题1:They often ________ (do) their homework at school.

小题2:Look! The cat _____________ (run)up the tree.

小题3:Let’s _________ (have) supper.

小题4:Thank you very much for _____________ (give) me a very nice bag.

小题5:He would like __________ (go) shopping.

小题6:Listen ! The children____________ ( sing ) in the classroom.

小题7:He ____________ (not speak ) Chinese.

小题8:Mary likes___________( read ) very much.

小题9:The animal usually sleeps and ________（relax）20 hours every day.

小题10:I want ___________ (work) in a post office.

用无水Na2CO3来标定0.1mol/LHCl溶液，宜称取Na2CO3为（）。（M=105.99g/moL）

A、0.5~1g

B、0.05~0.1g

C、1~2g

D、0.15~0.2g

明朝与蒙古以长城为界各自为政，形成南北对峙（）余年的局面，到17世纪40年代才告结束。

当构成FIDIC合同的组成文件中出现不一致时，以( )为优先解释的依据。

A．通用条件
B．专用条件
C．合同协议书
D．中标通知书

计算题：已知水灰比为0.6，当用水量为168kg时，问需要水泥多少kg？