高一英语必修一期末试题(5)

D. The moment you open your eyes the light from the book travels to your eyes.

C

For thousands of years, we have looked for way to measure time. Early humans found that the regular movement of the sun, the earth, the moon and the stars made good ways to measure time. The rising and setting of the sun were used to distinguish(区别) day from night.

But eventu ally, people needed to tell time more accurately, or exactly. So by using the sun’s position in the sky, they divided the day into dawn morning, midday and evening.

Then it was noted that the sun cast a changing shadow(阴影) as it moved across the sky. Time could be told more accurately by setting up a stick and making the positions of the sun’s shadow. It was the ancient Greeks who divided each position of this “sundial(日晷)” into hours.

But the sun doesn’t always shine so. For the past 6000 years, many other ways of keeping time have been tried. Slow-burning candles were divided into hours, and the hourglass was invented. When all the sand in the top of an hourglass has shifted to the bottom, an hour has passed.

Later, the pendulum(钟摆), with its regular back-and-forth movement of weights, was used to move the hands on a clock pendulums are still used in grandfather clocks.

Today, even more accurate clocks are in use, such as battery-operated quartz clocks, digital clocks and clocks run by electrical turning forks and tiny atoms. These atomic clocks are the most accurate clocks ever invented. The exact time can be kept to within one second a century.

44.When something is very exact, it is said to be __________.

A. slow

B. accurate

C. fast

D. of poor quality

45.Humans in the old days used __________ to tell day from night.

A. the rising and setting of the sun

B. battery-operated quartz clocks

C. atomic clocks

D. digital clocks

46. A sundial works by __________.

A. tracking the movement of the stars around the sun

B. marking a shadow cast by the moving sun

C. burning candle in the sunlight

D. watching the stars

47.Which of the following was NOT used in the past to measure time?

A. An hourglass.

B. A sundial.

C. Digital clocks.

D. A pendulums.

D

Rome has the Forum. London has Speaker’s Corner. Now always-on-the-go New Yorkers have Liz and Bill.

Liz and Bill, two college graduates in their early twenties, have spent a whole year trying to have thousands of people talk to them in subway stations and on busy street corners. Just talk.

百度搜索“77cn”或“免费范文网”即可找到本站免费阅读全部范文。收藏本站方便下次阅读，免费范文网，提供经典小说综合文库高一英语必修一期末试题(5)在线全文阅读。