创业计划书应该具有(),以便投资者可以较容易地查阅各个章节。
A.参与人员
B.市场调研
C.制定创业计划
D.索引和目录
参考答案:D
We didn't know _____, so we gave it to the police. [ ]
A. whose wallet it is
B. whose wallet was it
C. whose wallet is it
D. whose wallet it was
蛋白质分子结构多种多样,在细胞里的功能也是多种多样的写出蛋白质其中的两种功能()