紫外-可见光的波长范围（nm）是（） A.200～400 B.400～760 C.2

阅读理解。

     A recent report says about 18% of China teenagers can have problems with their minds. Some students

become worried because they have to study very hard. Others have trouble getting on well with people like

their parents and classmates.

     Zhang Qiang, a Junior 2 student from China, could not understand his teachers in class and was doing

badly in his lessons. He was afraid of exams. When he looked at the exam paper, he couldn't think of anything

to write.   

     Another student, a 15-year-old girl called Wu Yan from Guangdong often argued (争吵) with her

classmates even her parents because of some different ideas. She became so angry with them that she

started  to cut her finger with a knife.

      However, many students who have problems won't go for advice or help. Some think they will look

stupid if they go to see a doctor. Others don't want to talk about their secrets. In order to solve the teenagers'

problems, here is some advice:

     ● Talk to your parents or teachers often.

     ● Take part in group activities and play sports.

     ● Go to see a doctor if you feel unhappy or unwell.

1. Some students became worried because of  _____. 

A. their study

B. their teachers

C. their hobbies

D. their clothes

2. Wu Yan cut her finger with a knife because _____.

A. she was afraid of exams

B. she had no money for a new shirt

C. she could not understand her teachers in class

D. she often argue with her classmates and her parents

3. How many pieces of advice are given to the teenagers who have problems in this passage?

A. Two.

B. Three.

C. Four.

D. Five.

患者，女性，48岁。患1型糖尿病30年，因感冒体温达39℃，食欲减退、恶心、呕吐及腹痛而入院。

为了预防糖尿病足的发生，患者采取的措施中，错误的是（）

A.每日温水洗脚

B.每日检查足部

C.修剪趾甲宜短，以利于清洁

D.鞋要舒适、宽松

E.袜子柔软、透气

为丰富课余生活，同学们组织了一次野炊活动．

（1）甲组同学用方便袋盛装了一次性筷子、不锈钢铁锅、塑料水杯等物品，所盛装的物品中属于有机高分子材料的是______．

（2）乙组同学用一次性餐盒准备了大量食物，其中橘子、黄瓜富含的营养素是______，若准备富含蛋白质的食物，你建议他们带的食物为______．

（3）野炊结束后，同学们用沙土盖灭未燃尽的木柴，所用的灭火原理是______．

（4）从节约资源、倡导“低碳生活”的角度，请你对上述所使用的物品提出合理化建议______．

（）是全面深化改革的重点。

A.经济体制改革

B.政治体制改革

C.文化体制改革

D.社会体制改革

消防工作任务是什么？