国家一、二等水准测量单一水准路线高差闭合差的分配原则是()。
A.按距离成比例反号分配
B.按距离成比例同号分配
C.按测段平均反号分配
D.按测段平均同号分配
参考答案:A
I can’t imagine_____ with such a famous author.
A.work
B.to work
C.to be working
D.working
Passage Two
What can be inferred from Paragraph 4
A.Unpackaged products are of bad quality.
B.Supermarkets care more about packaging.
C.It is improper to judge quality by packaging,
D.Other products are better packaged than foo