在证明DNA是遗传物质的实验中,赫尔希和蔡斯分别用32P和35S标记噬菌体DNA和蛋白质,在下图中一定有放射性的依次是
A.①、④
B.②、④
C.①、⑤
D.③、⑤
答案:A
—What do you think of the new comer?
—She is easy .
A.to get along with
B.to get along
C.getting along
D.getting along with
尼莫地平的结构式为()
A.
B.
C.
D.
E.