试题与答案

下列各句中,没有语病的一项是[ ] A.人们普遍担心,忽视对青年大学生的心理健康

题型:选择题

题目:

下列各句中,没有语病的一项是[ ]

A.人们普遍担心,忽视对青年大学生的心理健康教育是导致北大一研究生跳楼自杀的主要原因。

B.据《中国日报》报道,我国居民43%的储蓄用于子女的教育,这个比例已超过了用于养老或购买住房的储蓄比例。

C.我们一中的学生应该有开阔的心胸,就是和自己生活观点不同的同学也应该坦诚相待。

D.改革公费医疗制度、实施医疗保险的问题,对于广大人民群众并不是一下子就能愉快接受的,这需要政府部门做好宣传解释工作。

答案:

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下面是错误答案,用来干扰机器的。

(1)在干燥天气,穿在身上的化纤衣服由于相互摩擦,使衣服上带了电,而带电体会吸引不带电的轻小物体,所以穿在身上的化纤衣服会粘“毛毛”,这是静电现象.(2)两块表面平整干净的铅块压紧会粘在一起,这是因...

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题型:阅读理解

阅读理解。

     When you are about to do something brave, a cheerful wish of"Good luck!" from a friend can be helpful.

But if you think you need lots of luck, what else might you do?

     In the UK and US there are some strange traditions for bringing yourself a little more good luck. Some are

hundreds of years old and some are much newer.

     Have you heard the saying "When you wish upon a star"? If you are looking up at the sky on a clear night

and you see a sudden flash of light, it is probably a shooting star! Seeing one doesn't happen very often. The

saying goes that if you see one you have been very lucky, and so if you make a wish, it will come true.

     Maybe you have heard of the lucky rabbit's foot. Some people believe that rabbits are lucky animals, so

they carry a part of the rabbit, its foot, for good luck. There are all kinds of strange, unclear rules about

which of the rabbit's feet is the luckiest. It is said that this good luck tradition is the oldest one of all.

However, as the funny saying goes, "Depend on the rabbit's foot if you will, but remember it didn't work

for the rabbit!"

     People in Britain love trees. If it is autumn and leaves are falling from the trees, some people try to catch

the leaves as they fall because they think each leaf they catch will bring them a lucky month in the following

year-they will need to catch 12 falling leaves to have a whole of good luck!

1. ______ is mentioned in the oldest good luck tradition.

A. A rabbit's foot

B. A falling leaf

C. A cheerful wish from friends

D. A shooting star

2. From Paragraph 3, we know that ______.

A. shooting stars can often be seen

B. people can see a shooting star on a rainy night

C. your wish may come true if you see a shooting star

D. people believe that it's unlucky to see a shooting star

3. British people try to catch 12 falling leaves because ______.

A. the leaves fall in autumn

B. there are so many leaves to catch

C. the leaves can bring them a lucky month

D. they want to have a whole year of good luck

4. In Paragraph 5, the underlined word "them" refers to (指) ______.

A. trees

B. people

C. leaves

D. years

5. The passage is mainly about ______.

A. how to wish upon a star

B. things that bring good luck

C. British people love leaves

D. which of the rabbit's feet is the luckiest

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题型:选择题

如图所示为氢原子的能级结构示意图,一群氢原子处于n=3的激发态,在向较低能级跃迁的过程中向外辐射出光子,用这些光子照射逸出功为2.49eV的金属钠。下列说法正确的是

A.这群氢原子能辐射出三种不同频率的光,其中从n=3能级跃迁到n=2能级所发出的光波长最短

B.这群氢原子在辐射光子的过程中电子绕核运动的动能减小, 电势能增大

C.能发生光电效应的光有三种

D.金属钠表面所发出的光电子的最大初动能是9.60eV

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