Natural ways of keeping time In ancient times, people had to use the sun and the moon to tell time. They got up when the sun came up and worked in the fields until the sun went down. Man-made things T 题目和参考答案——青夏教育精英家教网—

题目内容

Natural ways of keeping time

In ancient times, people had to use the sun and the moon to tell time. They got up when the sun came up and worked in the fields until the sun went down.

Man-made things

The sand clock is made of two glass balls joined by a narrow neck. The top ball was filled with sand. The sand slowly moved through the neck into the bottom ball. People knew how much time had passed when all the sand had fallen to the bottom ball.

People also made the water clock. They made a small hole near the bottom of a pot. Then they filled the pot with water. Markings inside the pot showed how much time passed as the water dripped (滴) out of the hole.

Nature’s Clocks in Living Things

◆Animals’ Body Clock

Animals do not need clocks to know time. They have a way of telling time by their bodies. Birds know when to fly to warmer places before winter. Some animals know when to keep more food for the cold winter months. Some fish know when it is time to move up the river and lay eggs.

◆Plants have their own clocks

Plants also have their own clocks to keep time. Plants know when to open flow??ers or when to drop their leaves.

◆The Body Clock in Human Beings

People also have their own body clocks. When we get used to our lives, our body clocks can be very accurate (准确的). It can tell us when it is time to wake up. It can also tell us when to eat or to go to sleep.

How could an ancient farmer know when to go back home in the daytime?

A. By looking at the moon. B. By looking at the stars.

C. By looking at the sun. D. By feeling whether tired or not.

How many kinds of living things with nature’s clocks are mentioned here?

A. 2. B. 3. C. 5 D. 6.

From the passage, we know what man-made things have in common is that_______.

A. both of them have a hole. B. both of them are designed with glass balls.

C. both of them can be used only once. D. both of them tell time in the same way

【小题1】C

【小题2】B

【小题3】D

解析:

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There are several causes leading to poor eyesight like not enough food, genes (基因) and aging (老化). Televisions, computers and reading are also the causes of having poor eyesight. If you happen to work in front of the computer, it is best to take a break every once in a while. Something dirty can cause redness and they will make you feel uncomfortable. It is bad for your eyes, too. If this happens, the best way is to clean your eyes by using cold water. You must also try your best to protect your eyes from harmful things. For example, sunglasses are not just for fashion but they can also serve as a great way to protect your eyesight form UV rays.
Eating healthy foods will do good to your eyesight. Remember that vitamins A, C and E are good for eyes. Try to eat food groups that have these vitamins. And you should do eye exercises because exercise protects your eyesight, too. If a person exercises regularly (定期地) and eats the right kind of food, his eyes will stay in good condition for a long time.
All above are natural ways of eye care that help us keep healthy eyes. Being happy all the time can be helpful to a person's eyesight, too. In a word, eye care is very important, no matter how old a person is.
【小题1】_____ is the most important way to protect our eyes.

A．Seeing the doctor	B．Taking medicine
C．Natural eye care	D．Being happy all the time

【小题2】All the following causes can lead to bad eyesight except _______.

【小题3】What should you do if you have to work in front of the computer?

A．Eat healthy foods.	B．Have a rest after working for a while.
C．Wear a pair of sunglasses.	D．Clean the eye by using cold water

【小题4】Which is the best title of the passage?

A．Ways of Being Happy	B．Ways of Eye Exercises
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Looking back on my childhood. I am convinced that naturalists are born and not made. Although we were brought up in the same way, my brothers and sisters soon abandoned their pressed flowers and insects. Unlike them, I had no ear for music and languages. I was not an early reader and I could not do mental maths.

Before World War I we spent our summer holidays in Hungary. I have only the dim memory of the house we lived in, of my room and my toys. Nor do I recall clearly the large family of grandparents, aunts, uncles and cousins who gathered next door. But I do have a crystal clear memory of dogs, the farm animals, the local birds and above all, the insects.

I am a naturalist, not a scientist. I have a strong love of the natural world, and my enthusiasm has led me into varied investigations. I love discussing my favorite topics and enjoy burning the midnight oil reading about other people’s observations and discoveries. Then something happens that brings these observations together in my conscious mind. Suddenly you fancy you see the answer to the riddle. Because it all seems to fit together .This has resulted in my publishing 300 papers and books. Which some may light honor, with the title of scientific research.

But curiosity, a keen eye, a good memory and enjoyment of the animal and plant world do not make a scientist? One of the outstanding and essential qualities required is self-discipline, a quality I lack. A scientist can be made a naturalist. If you can combine the two, you get the best of both worlds.

1.According to the author, a born naturalist should first of all be _____

A. full of ambition B. self-disciplined

C. full of enthusiasm D. knowledgeable

2.The first paragraph tells us that the author _____

A. lost his hearing when he was a child

B. didn’t like his brothers and sisters

C. was interested in flowers and insects in his childhood

D. was born to a naturalist’s family

3.The author says that he is a naturalist rather than a scientist probably because he thinks he __ .

A. just reads about other people observations and discoveries.

B. Lacks some of the qualities required of scientist.

C. Has a great deal of trouble doing mental arithmetic.

D. Come up with solutions in most natural ways.

4.The author can’t remember him relatives clearly because__

A. He didn’t live very long with them

B. He was too young when he lived with them.

C. The family was extremely large.

D. He was fully occupied with observing nature.

5.Which of the following statements is true?

A. The author believes that a born naturalist cannot be scientist.

B. The author read a lot of books about the natural world and oil industry

C. The author’s brothers and sisters were good at music and languages.

D. The author spent a lot of time working on riddles.

Before Word War I we spent our summer holidays in Hungary. I have only the dim memory of the house we lived in, of my room and my toys. Nor do I recall clearly the large family of grandparents, aunts, uncles and cousins who gathered next door. But I do have a crystal clear memory of dogs, the farm animals, the local birds and above all, the insects.

But curiosity a keen eye, a good memory and enjoyment of the animal and plant world do not make a scientist? One of the outstanding and essential qualities required is self-discipline, a quality I lack. A scientist can be made a naturalist. If you can combine the two, you get the best of both worlds.

1.According to the author, a born naturalist should first of all be _____

A.full of ambition B. self-disciplined

C. full of enthusiasm D. knowledgeable

2.The first paragraph tells us that the author _____

A.lost his hearing when he was a child

B. didn’t like his brothers and sisters

C. was interested in flowers and insects in his childhood

D. was born to a naturalist’s family

3.The author says that he is a naturalist rather than a scientist probably because he thinks he ____.

A.just rends about other peoples observations and discoveries.

B.Lacks some of the qualities required of scientist.

C.Has a great deal of trouble doing mental arithmetic.

D.Come up with solutions in most natural ways.

4.The author can’t remember him relatives clearly because__

A.He didn’t live very long with them

B.He was too young when he lived with them.

C.The family was extremely large

D.He was fully occupied with observing nature.

5.Which of the following statements is true?

A. The author believes that a born naturalist can not be scientist.

B. The author read a lot of books about the natural world and oil industry

C. The author’s brothers and sisters were good at music and languages.

D. The author spent a lot of time working on riddles.

Natural ways of keeping time

In ancient times, people had to use the sun and the moon to tell time. They got up when the sun came up and worked in the fields until the sun went down.

Man-made things

Nature’s Clocks in Living Things

◆Animals’ Body Clock

◆Plants have their own clocks

Plants also have their own clocks to keep time. Plants know when to open flowers or when to drop their leaves.

◆The Body Clock in Human Beings

1.How could an ancient farmer know when to go back home in the daytime?

A. By looking at the moon. B. By looking at the stars.

C. By looking at the sun. D. By feeling whether tired or not.

2. How many kinds of living things with nature’s clocks are mentioned here?

A. 2. B. 3. C. 5 D. 6.

3.From the passage, we know what man-made things have in common is that_______.

A. both of them have a hole. B. both of them are designed with glass balls.

C. both of them can be used only once. D. both of them tell time in the same way

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