意在笔先
参考答案：
在落笔之前要初步形成的意象，用意是用笔成败的关键。
---Don't you think it necessary that he to Miami but to New York?
---I agree, but the problem is he has refused to.[ ]
A. will not be sent; that
B. not be sent; that
C. should not be sent; what
D. should not send; what
帮助蛋白质分子正确折叠或解折叠的是（）。
