下列醌类化合物包括（）
A.苯醌
B.菲醌
C.萘醌
D.蒽醌
E.氢醌
参考答案：A, B, C, D
With two children ___middle school in the nearby town now, the parents are working hard．
A．to attend
B．attend
C．attending
D．attended
—Can you draw?
—______.[ ]
A. Yes, a little.
B. No, I’m not.
C. Yes, please.
D. No, I don’t
