双胍类药物常见的副作用为（）。 A.乳酸性酸中毒 B.低血糖 C.胃肠道反应 D.过

Ten years ago the population of our village was _____that of theirs. [ ]

A. as twice large as

B. twice as large as

C. twice as much as

D. as twice much as

My father _________to South Hill．He______ there for 5 days．

A．has gone：has been

B．has been; has gone

C．has gone；has gone

D．has been；has been

哮病发作期，热哮的治法为（）。

A.清热宣肺，化痰定喘

B.温肺散寒，化痰平喘

C.解表散寒，清化痰热

D.祛风涤痰，降气平喘

E.补肺纳肾，降气化痰

We go back home _____ 8: 00 _____ the evening. [ ]

A. at; on

B. on; in

C. at; in

D. in; on

压铸工在上下交班时，接班压铸工必须检查在压模具的使用状况，应做到“（）”。