关于遗传病的概念，哪个叙述正确（） A.遗传病是指传递现成的病

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问题单项选择题

关于遗传病的概念，哪个叙述正确（）

A.遗传病是指传递现成的病，有如传染病的水平传递

B.先天性疾病全是遗传病

C.家族性疾病不全是遗传病

D.家族性疾病与遗传无关

E.后天性疾病与遗传无关

答案

参考答案：C

阅读理解

阅读理解。根据要求完成下列各题。

Mars is the fourth planet from the sun and is commonly known as the Red Planets. The rocks, soil and sky

of it are a little red or pink. Its name was given by the Romans in honor of their god of war.

People on the earth need oxygen to breathe. There is almost no oxygen on Mars. Living on Mars would be

like living on a very high mountain. There would be little air. It might be 50 degrees above zero at noon and 100

degrees below zero at night. We know that Mars has carbon. Through a telescope, Mars looks red. In some

places, it seems gray. At times the gray turns gray-green, then brown, then gray again. The gray-green may be

a kind of plant color which changes with the seasons.

Life is expected on Mars by scientists, because there are distinct seasons on the planet's surface. This

condition might support plants. However, some researches find if Mars had life, it must have been a long time

ago. For Mars' first 600 millions years, it had plenty of water and proper temperatures for life. But now the

planet's environment has changed. Mars is not a pleasant place for any form of life.

1. 根据解释，在短文中找出相应的单词或短语。

______: famous ______: sometimes

2. Its name was given by the Romans in honor of their god of war.

(改为主动语态的句子) __________________________________________________________________

3. Why is life expected on Mars by scientists?

(回答问题) __________________________________________________________________

4. There is almost no oxygen on Mars.

(改为反意疑问句) There is almost no oxygen on Mars, _____ _____?

5. But now the planet's environment has changed. Mars is not a pleasant place for any form of life.

(翻译成汉语) __________________________________________________________________

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完形填空

Welcome to the City Zoo. There are many 1 in the zoo. Let’s see the koalas first. Koalas are 2 Australia. They are quiet, 3 and cute. Children like them very much. The kangaroos(袋鼠) are also from 4. They are quiet and interesting, 5 they are not friendly.
The giraffes come from Africa. They have 6 necks(脖子). They like to eat leaves. The lions are also from Africa. They are brave but a little 7. Many people don’t like 8. We also have pandas. They are from China. They are very cute and friendly, but they are very shy. So please be 9.
You 10 see many other animals in the zoo. Have fun and enjoy yourself here!

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