翻译题：翻译下列句子。 1. 保持健康对我们来说很重要。 ______________

题型：单项选择题 A3/A4型题

在定性调查中，研究者可以通过与调查对象的开放式讨论中发现问题，并引导调查对象就某些有价值的问题进行深入讨论，探讨问题深层次原因。

研究者通过调查对象所处环境的现场观察，获得有关研究内容的第一手资料是（）

A.访谈法

B.观察法

C.调查法

D.座谈法

E.现场调查法

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题型：问答题

如图所示，带电平行金属板PQ和MN之间的距离为d，金属板之间有垂直纸面向外的匀强磁场，磁感应强度大小为B，x轴与金属板中心线重合，y轴垂直于金属板，在区域Ⅰ和区域Ⅱ内存在方向相同的匀强磁场，磁感应强度大小分别为B₁和B₂，且B₁＜B₂，一电子沿着x轴正向以速度v₀射入平行板之间，在平行板间恰好沿着x轴正方向做直线运动，并由区域Ⅰ进入区域Ⅱ，然后经过y轴离开区域Ⅰ，已知区域Ⅰ沿x轴方向宽度为

3

mv0

2B1e

，区域Ⅱ的宽度足够大，电子电荷量为e，质量为m，不计电子重力，求：

（1）两金属板之间电势差U；

（2）电子在区域Ⅰ和区域Ⅱ中运动的半径R₁和R₂；

（3）电子两次经过y轴的时间间隔t．

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题型：名词解释

慢性扁桃体炎

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题型：阅读理解

阅读理解。

As you climb into the hill country, the roads get dustier and rougher, and fewer cars can be seen.

Phonxay is one of the poorest districts of Laos, and many of its villages are only accessible by footpath.

Our destination this hot morning is a concrete water tank that can be found just off the road. A UK

organization helped to build it six years ago, and in the nearby village of Thapho, where clean drinking

water is scarce, it has made a big difference. The tank feeds six taps which in turn give water to over 800

people---it has improved things for almost every family, from schoolchildren to grannies.

But lately, we were told, the clean water supply has come under pressure from new arrivals, people

who have come down from the hill areas, and there are concerns that there will not be enough clean water to go round.

There are also serious worries about resources in Laos. The Chinese are building a 400km railway link, which could transform the landlocked country. About 150,000 Chinese workers will be involved. What

will this do to local clean water supplies? How will the workers be fed?

The vast majority of Laotians live on farms. But with foreign investors wanting to buy up land, local

people will have to be moved to make room for them. Heavily dependent on both foreign aid and foreign

investment, Laos still falls well behind its neighbours, although its economy has grown at about 6% a year

in the last decade. Its biggest economic problem is the lack of locally trained skilled workforce.

But there are reasons to be hopeful for the future. Laos is beautiful, and foreign tourism continues to grow: fortunately so far the fast-food chains and coffee bars common elsewhere are nowhere to be seen.

Although all local media are government-run, the Internet is not controlled and the BBC and CNN are

available to those with satellite dishes.

The government has also achieved impressive results in rural development, with communities benefiting not just from cleaner water but the construction of new schools and regular visits from medical teams.

Poverty will not be history in Laos within the next decade, but with small steps forward and a bit of outside help, the country could find itself out of the UN's least-developed category by 2020.

1. The underlined word "scarce" in paragraph 1 most probably means_________.

A. valuable

B. rare

C. infrequent

D. missing

2. What is putting pressure on the local supply of clean water?

A. Dust from the road is making the water dirtier.

B. There are too many taps accessing the water.

C. The population of the area is growing fast.

D. The coming summer will dry up rivers and lakes.

3. What is the most serious limitation on Laos' economic growth?

A. The lack of local skilled workers.

B. A poor transportation system.

C. Too much foreign aid.

D. Too many foreign workers.

4. According to the passage, which of the following is NOT a reason for Laos to be hopeful?

A. There are no fast-food restaurants in the country.

B. Laos has a variety of tourist attractions.

C. Information on the Internet is freely accessible.

D. The government owns all local media.

5. What is the best title for the passage?

A. Laos: small steps forward

B. Laos: slow-developing nations

C. Laos: least-developed land

D. Laos: landlocked country

翻译下列句子。 1. 保持健康对我们来说很重要。 ______________

题目：

答案：