【C5】A．aB．someC．anyD．such

Land belongs to the city; there is ______ thing as private ownership of land.A．no such aB．

【C15】A．otherB．someC．anyD．all

I decided not to______John when he was in such a desperate position.A．vanishB．separateC．ab

If_____letter arrives for me, can you send it to this address？A．noB．someC．anyD．some more

【C5】A．allB．itC．themD．such

既有过敏毒素作用又有趋化作用的补体成分是A、C3a、C4aB、C3a、C5aC、C4a、C5aD、C3a、C5bE、C3b、C4b