Many students will take part in the school sports meeting this week, so she suggested that the

class meeting ______ held on Saturday. [ ]

A. not be            

B. not to be         

C. be not        

D. be not to

气体钻井完井流体不适用于（）。

A.含大量水的井段

B.高压油气层及含硫化氢的地层

C.深井

D.上述三项