- Is this your book? -_________ .[ ] A.

食品安全与人体健康密切相关．下列做法不会危害人体健康的是（　　）

A．将工业用盐亚硝酸钠（NaNO₂）用于腌制火腿

B．用甲醛溶液浸泡水产品

C．霉变的大米经过反复蒸煮后食用

D．在煲好的鸡汤中放入适量的加碘食盐

（）的实质是人口再生产与物质资料再生产不相适应。

单句改错。

1. Zhongguancun made possible for him to follow his dreams and help the country he loves. _________.

2. A number of overseas Chinese has grasped the opportunity to develop their ideas at home. _________.

3. He used for the latest ideas and technical inventions of his day in his books. _________.

4. Walk along its shores they go through forests of mushrooms and plants that lived on the earth long ago.

     _________.

5. It was on a night in November when I looked at the result of my work. __________

6. The water in the ocean also keeps the temperature of the earth steadily by absorbing and releasing heat.

     _________

7. Heat capacity is the amount of energy that takes to raise the temperature of a substance one degree 

    centigrade. __________

8. At that time black people had no rights to voting in the southern states of America. _________

9. Housing condition for blacks were bad and there were little jobs to employ blacks. _________

10. There were already people wondering whether to fight for the rights of robots and machines. _________

若没有重力，下列哪些现象不会发生[ ]

A.河水不流动

B.茶杯里的水倒不进嘴里

C.人轻轻一跳就会离开地球

D.玻璃杯掷在墙壁上不会碎

女性，50岁，以颊黏膜粗糙感、反复刺激性疼痛就诊。体检：双颊黏膜及下唇红有网状白纹，右颊及唇红损害区有少量充血区。组织活检：上皮表面不角化、棘层细胞增厚、基底细胞排列紊乱。

鉴别诊断时最需与该疾病鉴别的是（）

A.盘状红斑狼疮

B.多形性红斑

C.口腔溃疡

D.白色海绵状痣

E.白色水肿