单选题：A great deal has been done to remedy the situation.

题目内容：

A great deal has been done to remedy the situation. A．maintain
B．improve
C．assess
D．protect

参考答案：

答案解析：

Those scientists are studying on how to harness the energy o

Those scientists are studying on how to harness the energy of the wind.A．create

分类：卫生类题型：单选题

We have diverse ways to solve the problem and shouldn't give up the hope.A．color

分类：卫生类题型：单选题

回答(64)题A．and B．or C．nor D．also

分类：卫生类题型：单选题

Some of the trials were too short to show their long-term effects.A．Right B．Wron

分类：卫生类题型：单选题

Mary said mildly, "I'm just curious about it."A．gently B．shyly C．weakly D．sweetl

分类：卫生类题型：单选题