单选题：Establishment of a sound insurance system is essential for d

题目内容：

Establishment of a sound insurance system is essential for deepening economic reforms. A．accurate
B．healthy
C．undisturbed
D．safe

参考答案：

答案解析：

It is so urgent that you have to start immediately.

It is so urgent that you have to start immediately.A．lastly B．shortly C．recently

分类：理工类题型：单选题

根据以下材料，回答题Sharks Perform a Service for Earth's WatersIt is hard to get people

分类：理工类题型：单选题

回答(11)题A．and B．though C．but D．so

分类：理工类题型：单选题

回答(2)题A．Earth B．space C．planet D．star

分类：理工类题型：单选题

回答(6)题A．found B．produced C．positioned D．located

分类：理工类题型：单选题