在肾脏分泌的下列主要生物活性物质中，不包括（）
A.肾素
B.肾上腺素
C.1，25-（OH）2-D3
D.促红细胞生成素
E.前列腺素
参考答案：B
(2012·浙江高考)No matter how bright a talker you are, there are times when it's better ________ silent.
A．remain
B．be remaining
C．having remained
D．to remain
He insisted that he ____right, and so he insisted that his plan ____carried out at once.[ ]
A. was; be
B. be; would be
C. was; was
D. be; should be
