A:限制性核酸内切酶
B:DNA连接酶
C:DNA聚合酶
D:质粒
下列命题中,是真命题的是( )
近代史上英国对印度进行大肆掠夺和野蛮扩张的代表人物是( )
下列各有机物的名称肯定错误的是( )
— Come and join us, Ben!— I'm afraid I can't. I'm too busy now. If I ________ time, I would certainly go.