Question

    How could we tell time if there were no watches or clocks anywhere in the world?

The sun is probably the world’s first “clock”, except in the far north, where the Eskimos(爱斯基摩人)live. There, it’s dark most of the winter, and bright most of the summer. But in most of the world, people have used the sun as a clock. Even today, if you don't have a clock, you can still know that when the sun shines, it’s day and when it’s dark, it’s night. The sun can also tell you if it's morning, noon, or afternoon.

Some people live near the sea. They have their special way to tell time. In the daytime, for about six hours, water rises higher and higher on the beach. And then it goes down and down for about six hours. The same thing happens again at night. There are two high tides and two low tides every 24 hours. Seamen on the ship learn how to tell time by looking at the moon and the stars. The whole sky is their clock.

In some places in the world, the wind comes up at about the same time every day or changes direction or stops blowing. In these places the wind can be the clock.

A sand clock is an even better clock. If you had fine dry sand in a glass, you would have what is called an hourglass. The sand in the hourglass goes from the top part to the bottom in exactly one hour. When the hourglass is turned over, the sand will take another hour to go back again.

1.From the passage we can know there are________ ways to tell time besides the clock and watch.

A.3 B.4 C.5 D.6

2.The Eskimos in the far north can’t use the sun for a clock because________.

A.they know very little about the sun

B.the sun there never goes down in winter

C.it's too cold for them to go out to watch the sun

D.it has long dark winters and long bright summers

3.In which column of a newspaper can you probably read this passage?

A.Entertainment. B.Science. C.Advertisement. D.Sports.

4.What is the best title for the passage?

A.Different Ways to Tell Time B.How the Clock Was Invented

C.The Development of the Clock D.A Useful Machine to Tell Time

Answer

1.C

2.D

3.B

4.A

【解析】

文章大意：短文主要介绍了没有手表和钟表，其他的方式也可以给人们指示时间。如太阳的转动，大海的潮汐，风的变化，以及沙漏等。

1.细节理解题。根据短文描述太阳的转动，大海的潮汐，风的变化，以及沙漏可以指示时间可知，包括钟表在内共五种方法可以得知时间，故答案为C.

2.细节理解题。根据文中There, it’s dark most of the winter, and bright most of the summer.可知，冬天的夜很长，夏天的日很长，所以爱斯基摩人没法用太阳来得知时间。故答案为D。

3.细节理解题。根据文中The sun can also tell you if it's morning, noon, or afternoon. Seamen on the ship learn how to tell time by looking at the moon and the stars. A sand clock is an even better clock.可知，介绍了人们了解时间的方式。由此可知，这是一段科普文章，故答案为B。

4.主旨大意题。根据文章大意“短文主要介绍了没有手表和钟表，其他的方式也可以给人们指示时间。如太阳的转动，大海的潮汐，风的变化，以及沙漏等。”可知，这段话最好的标题应是“指示时间的不同方法”，故答案为A。