单选题：Those scientists are studying on how to harness the energy o

题目内容：

Those scientists are studying on how to harness the energy of the wind. A．create
B．store
C．utilize
D．produce

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．a

分类：理工类题型：单选题

回答题：Thirst for OilWorldwide every day，we devour the energy equivalent of about 2

分类：理工类题型：单选题

Paragraph 3_____A．Significance of Testing Techniques for Sampling Microbes in th

分类：理工类题型：单选题

There is evidence that smoking is responsible for breast cancer.A．Right B．Wrong

分类：理工类题型：单选题

Which of the following statements is NOT meant by the writer?A．Cells in your bra

分类：理工类题型：单选题