WHO推荐使用的口服补液盐的氯化钾的浓度为（） A.0.1% B.0.15% C.0

根据短文内容，选择最佳选项。

     A terrible mudslide (泥石流) swept through Zhouqu County in northwest China's Gansu Province

on August 7, 2010. Lots of people were killed and injured in the disaster (灾难), and some are still

missing. Now the new school semester began. How about the students there?

     Up till now, most people including teachers and students are still living in the tents. The students should

have started their new semester on August 15. However, the terrible mudslide disrupted the plan since

two schools were damaged and three others were used as resettlement areas (安置区). The new

semester had to be put off for ten days. Also, since many teachers were killed, parents were worrying that

their children might not be able to go to school. Luckily, 54 teachers from neighboring areas were sent to

Zhouqu County, and 12 volunteer teachers arrived there, too. Moreover, all the students got their text-

books and school things for free.

     On the first day of school, a girl said, "The disaster is weighing heavily on my mind (沉重地压在我

的心上). But today school begins. I'm with my classmates again. I feel so happy."

     Zhouqu County has two primary schools, two junior high schools and one senior high school. The

students of the only senior high school had to start the new semester in a school in the neighboring area.

Although the new school is far from their homes, they are happy to return to school.

1. The underlined word "disrupted" means "_____" in Chinese.

A. 实施

B. 打乱

C. 制定

D. 完善

2. The new school semester began on _____ in Zhouqu County.

A. August 7

B. August 15

C. August 25

D. September 1

3. What were the parents in Zhouqu County worrying?

A. There were no textbooks for their children.

B. Their children had problems with their studies.

C. The textbooks were too expensive for them to afford.

D. There were not enough teachers to teach their children.

4. From the underlined words the girl said, we can learn she is very _____.

A. sad

B. afraid

C. smart

D. optimistic (乐观)

5. Which of the following is NOT true according to the passage?

A. There are five schools in Zhouqu County.

B. Many people had to live in the tents after the mudslide.

C. The teachers now in Zhouqu County are much more than before.

D. The terrible mudslide killed many people and affected people's lives there.

图是元素周期表的一部分，根据此周期表中的变化规律，回答下列问题：

1H +1							2He 0
3Li +1	4Be +2	5B +3	6C +4 -4	7N +5 X	8O -2	9F -1	10Ne 0
11Na +1	12Mg +2	13Al +3	14Si Y -4	15P +5 -3	16S +6 -2	17Cl +7 -1	18Ar 0

（1）12号元素属于______（填“金属”或“非金属”），该元素原子的核外电子排布为______．

（2）根据周期表中化合价的变化规律，推导出元素化合价，写出下列物质的化学式：

①则14号元素最高化合价氧化物的化学式是______．

②则7号元素最低化合价与H元素形成化合物的化学式为______．

列综合算式并计算．

（1）8个4.05比40少多少？

（2）3.65除7.3与14.6的和，结果是多少？

诊断用超声的安全原则和规定包括（）.

A.目前使用的简单的B超成像设备在致热方面无禁忌证

B.某些多普勒诊断仪存在显著的升温效应

C.减少声束照射时间可以减少升温效应

D.对生殖系统器官应严格控制照射时间

E.对胎儿和眼睛的检查应严格控制时间及输出功率

下列哪项不是辨别中风闭证与脱证的依据（）

A.口开目合与口噤不开

B.手撒肢冷与两手握同

C.二便白遗与大小便闭

D.躁动不安与静而不烦

E.肢体软瘫与肢体强痉