经检查决定剖腹手术，术前准备中最关键的措施是

A．禁食

B．插胃管，胃肠减压

C．半卧位

D．应用抗生素

E．补液，输血

仔细阅读下面五个句子，然后用下面方框中所给的单词或短语填空，使每个句子在结构、句义和逻辑上正确。（提示：选项中有一个是多余的。）

give out /strange / provide / delicious / keep out /join

小题1:The best way to improve your English is to ＿＿＿ an English club.

小题2:Be quiet please, class. I’m going to__ your test papers.

小题3:Mr. Tan makes the best noodle in town. They’re _____!

小题4:There’s a ＿＿smell in the house. Do you know what it is?

小题5:Could you ＿＿＿ me with information about student exchange programs?