抽真空保存的无菌物品，可保存（）
A.3～6个月
B.4～7个月
C.10个月
D.一年
E.2～3个月
参考答案：A
用所给动词的适当形式填空。
小题1:Let me _________ (help) you with your English.
小题2:-- Where is your mother? -- She _________ (ride) a bike.
小题3:He with his friends often ___________ (fly) kites on Sundays.
小题4:His parents often ask him___________ (not watch) TV after 9p.m.
小题5:Thank you for __________( invite ) us to your party.
下属地基中适用于强夯置换法处理的地基是（）。（）
A.低饱和度的粉土和黏性土
B.高饱和度的粉土和黏性土
C.碎石土和砂土
D.软塑至流塑的黏性土
