违约的免责事由不包括（）。
A.自然灾害
B.政府征用
C.社会动乱
D.当事人的死亡
参考答案：D
Keep in mind that you should do the same things _____ in the instructions. [ ]
A. as are listed
B. which are listed
C. as listed
D. that listed
实施点播法，按照一定的行距和株距，进行开穴播种时，一般每穴播种（）粒。
A.1-2
B.2-4
C.5-8
D.8-10
