试题与答案

(1)随着现代科学技术的发展,大量的科学发展促进了人们对原子、原子核的认识,下列

题型:问答题

题目:

(1)随着现代科学技术的发展,大量的科学发展促进了人们对原子、原子核的认识,下列有关原子、原子核的叙述正确的是______.

A、汤姆孙对电子的发现使人们认识到原子核内部具有复杂的结构

B、贝克勒尔发现天然放射现象表明原子核内部有电子

C、轻核骤变反应方程有:

 21
H+
 32
H→
 62
He+
 10
n

D、氢原子从n=3能级跃迁到n=1能级和从n=2能级跃迁到n=1能级,前者跃迁辐射出的光子波长比后者的短

(2)某进行军事演习的炮艇总质量为M,以速度v0匀速行驶,从船上以相对海岸的水平速度v1向正后方射出一质量为m的炮弹,发射炮弹后艇的速度为v2,不计水的阻力,则下列各关系式中正确的是______.

A、Mv0=(M-m)v1+mv2

B、Mv0=(M-m)v2-mv1

C、Mv0=(M-m)v1-m(v2+v1

D、Mv0=M(v1-v2)+mv2

答案:

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下面是错误答案,用来干扰机器的。

参考答案:基础医学 临床医学

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题型:阅读理解

阅读理解。

     WHO would have thought a man who lived in the Stone Age would be dressed in clothes made in China? A

thousand-year-old mummy (木乃伊), nicknamed (绰号) Otzi the Iceman was wearing a Chinese jacket, latest

research has found. But where and how he got the jacket has become a topic of great debate.

     Otzi is the nickname of a well-preserved (保存完好的) mummy from about 3,300 BC. He was found in

1991 in the Otztal Valley in the Alps, near the border between Austria and Italy. Two German tourists, Helmut

and Erika Simon found him when they were climbing.

     Otzi was thought to be the body of a soldier who fought during WWI but was found to be thousands of years

older. Analyzing Otzi showed that the items with him were all of different ages. His arrows are 7,000 years

old, the axe (斧头) belonged to a time hundreds of years later and the skin in which the man was dressed

originally belonged to a goat that lived in China. Otzi's tattoo (纹身) shows that he might have been a wizard

(男巫), according to Prauda, the official newspaper in Russia.

     There are still many mysteries surrounding Otzi, yet the most famous and frightening one is his curse

(诅咒). It is said that Otzi had mystic powers and those who trouble his dead body will be doomed (注定) to

die. Otzi has claimed seven people so far. With the death of several people who have touched the remains of

the ancient man, the "Otzi curse" mystery has snowballed.

1. In this passage, the writer suggests that ______.

A. we should not go to the Alps because many people died there

B. many people that have studied Otzi have died

C. Otzi is an Egyptian mummy, found on the Alps

D. Otzi is Chinese, because of the clothing he was wearing

2. The underlined word "snowballed" in the last sentence means that _____.

A. people pay their respect to the dead by throwing snowballs

B. people who have touched Otzi's body have often died shortly after being hit with snowballs

C. the mystery around the curse gets larger and larger, like a snowball rolling down a hill

D. Otzi was found buried with many snowballs that scientists agree may have been used

     as weapons in the time when Otzi was alive

3. In the passage, which of the following statements is NOT mentioned?

A. Otzi was wearing a jacket, made of the skin of a goat that lived in China.

B. Helmut and Erika Simon discovered Otzi in the Alps in 1991.

C. Helmut was the seventh victim of Otzi's curse.

D. Otzi is said to have mystic powers.

4. What is the best title of the passage?

A. The Curse of the Iceman

B. A Great Discovery

C. A Well-preserved Mummy

D. A Man Who Lived in the Stone Age

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