参与DNA复制的酶不包括
A．DNA聚合酶
B．拓扑异构酶
C．引物酶
D．限制性核酸内切酶
E．DNA连接酶
参考答案：D
动物的多样性包括______多样性、______多样性和______多样性．
A number of students_____ playing on the ground but I don't know what the exact number______.
[ ]
A. are; is
B. are; are
C. is; is
D. is; are
