单选题：Why does the author mention an elderly mouse in paragraph 2?

题目分类：综合类
题目类型：单选题
号外号外：注册会员即送体验阅读点！

题目内容：

Why does the author mention an elderly mouse in paragraph 2? A．To describe the influence or old age on mice.
B．To illustrate the effect of meager food on mice.
C．To tell us how mice's liver genes behave.
D．To inform us of the process of metabolizing drugs.

参考答案：【答案仅供学习，请勿对照自行用药等】

答案解析：

"lOprojects in the pipeline" in the last paragraph means

"lOprojects in the pipeline" in the last paragraph meansA．10 pipelines to provi

分类：综合类题型：单选题

The sandwich generation face the following challenges EXCEPT

The sandwich generation face the following challenges EXCEPT__________A．sharing

分类：综合类题型：单选题

The phrase "the cutting edge" in Paragraph 3 is closest in

The phrase "the cutting edge" in Paragraph 3 is closest in meaning to__________

分类：综合类题型：单选题

Paragraph 6 __________

Paragraph 6 __________A．The financial center of USA B．The night life in New York

分类：综合类题型：单选题

Ryan, with the help of others, is fulfilling his dream of he

Ryan, with the help of others, is fulfilling his dream of help African people t

分类：综合类题型：单选题