单选题：The trials were stopped early because the treatments proved

题目内容：

The trials were stopped early because the treatments proved to be of no value. A．Right
B．Wrong
C．Not mentioned

参考答案：

答案解析：

The invisible hand usually leads markets to allocate resourc

The invisible hand usually leads markets to allocate resources efficiently.A．ass

分类：卫生类题型：单选题

My brother's dream in his youth was very ambitious.A．attractive B．aggressive C．a

分类：卫生类题型：单选题

Participants in the trials were happy when they were stopped early.A．Right B．Wro

分类：卫生类题型：单选题

根据以下材料，回答题Living on WaterDesperately short of living space and dangerously pro

分类：卫生类题型：单选题

回答(48)题A．In reply, Dr. Zunin would claim that a little practice can help us feel

分类：卫生类题型：单选题