质量计划可以在项目进行过程中编写，不一定在前期完成。
参考答案：错
The secret was finally let out _____ the daughter was an adopted one. [ ]
A. which
B. that
C. what
D. as
小松鼠摘了35千克水果，每6千克放进一个箱子里，至少需要（ ）个箱子
