UPS除了电池自动检测外建议用户人为每年充放电（） A.3-4次 B.1-2次 C.

熟地的功效是（）

A．益肾健骨，软坚散结 

B．固精止带，补脾止泻，益肾养心 

C．养血补心，软坚散结 

D．滋阴潜阳，退热除蒸，软坚散结 

E．润燥滑肠，软坚散结

I don't have a partner to practice English  _____  on the weekend.[ ]

A. to      

B. with        

C. and      

D. for

—Who do you often go to see Beijing Opera ___________?

—My parents. [ ]

A. for

B. to

C. in

D. with

---Do you know ______?

---Sorry, but if he _____ back, I ____ you know as soon as possible.  

A．when will he be back, comes, will let

B．when he will be back, will come, will let

C．what time will he be back, will come, let

D．what time he will be back, comes, will let

消化性溃疡致瘢痕性幽门梗阻最有诊断价值的症状是（）

A.呕吐

B.腹胀

C.消瘦

D.贫血

E.脱水