LDH由H和M亚基组成几种同工酶（）。
A.2种
B.3种
C.4种
D.5种
E.6种
参考答案：B
I’d rather have a room of my own, however small it is, than _______ a room with someone else.
A．to share
B．to have shared
C．share
D．sharing
游离气体
