【听英文对话做选择】日食

On December 25, 2000, many people across North America received a rare Christmas treat when the moon passed in front of the sun resulting in a partial solar eclipse.

Solar eclipses occur when the moon passes between the Earth and the sun, and the moon's shadow covers part of the Earth, and a total solar eclipse takes place when the moon's shadow blocks out the sun entirely¹. What made this particular solar eclipse unique was that this event has occurred on December twenty-fifth only 30 times during the past 5000 years, the last time in 1954.

 

But people must be exceptionally careful when attempting to view a solar eclipse. Without taking precautionary measures, one can permanently² damage the retina of the eye; however, there are several safe methods of witnessing this heavenly marvel³.

 

First, you can view a solar eclipse by using eclipse safety glasses for filtering out the sun's harmful rays. They should be used when any part of the sun is visible.

 

Sunglasses can block out some of the sun's ultraviolet rays, but the results can be very deceptive⁴. The eye's natural reaction to this darken state when wearing sunglasses is to make the pupil larger, which allows in more light and can intensify⁵ the damage to your eye.

 

You can watch an eclipse by projecting the sun's image on a piece of paper either by using a telescope, or easier yet, by creating a pinhole in a piece of paper and viewing the result on another piece of paper, thus called a pinhole projector⁶.

 

Only during a total eclipse when the sun is completely and briefly⁷ covered can you watch the eclipse without eye protection. Even then, extreme caution should be taken.

 

In case you didn't catch this last spectacular eclipse on December twenty-fifth, 2000, there's no need to fret⁸. Your posterity⁹ can record the next eclipse on Christmas in the year 2307, but only if they're visiting the west coast of Africa for the holidays.

 

1. What type of solar eclipse occurred on December 25, 2000?

A. annular¹⁰

B. total

C. partial

2. What made this eclipse so unique?

A. its location for viewing in the world

B. its timing¹¹ on the calendar

C. its movement across the sky

 

3. Who is the most likely audience for this news report?

A. intermediate skywatchers

B. novice¹² observers

C. avid¹³ astronomers¹⁴

 

4. Which statement was NOT mentioned about viewing an eclipse?

A. Sunglasses block out only a limited amount of the sun's ultraviolet rays that can damage the eye.

B. Sunglasses can only filter harmful rays during total solar eclipses at their greatest magnitude.

C. Sunglasses tend to cause the center of the eye to enlarge allowing in more intense light.

 

5. What is one fact we do not learn from the final commentary of the video?

A. the date of an upcoming solar eclipse

B. where the next Christmas eclipse will occur

C. how to record an eclipse for your posterity

 

正确答案：

1. partial

2. its timing on the calendar

3. novice observers

4. Sunglasses can only filter harmful rays during total solar eclipses at their greatest magnitude.

5. how to record an eclipse for your posterity

 

1 entirely   

ad.全部地，完整地；完全地，彻底地

参考例句：

• The fire was entirely caused by their neglect of duty. 那场火灾完全是由于他们失职而引起的。
• His life was entirely given up to the educational work. 他的一生统统献给了教育工作。

2 permanently   

adv.永恒地，永久地，固定不变地

参考例句：

• The accident left him permanently scarred.那次事故给他留下了永久的伤疤。
• The ship is now permanently moored on the Thames in London.该船现在永久地停泊在伦敦泰晤士河边。

3 marvel   

vi.(at)惊叹vt.感到惊异；n.令人惊异的事

参考例句：

• The robot is a marvel of modern engineering.机器人是现代工程技术的奇迹。
• The operation was a marvel of medical skill.这次手术是医术上的一个奇迹。

4 deceptive   

adj.骗人的，造成假象的，靠不住的

参考例句：

• His appearance was deceptive.他的外表带有欺骗性。
• The storyline is deceptively simple.故事情节看似简单，其实不然。

5 intensify   

vt.加强；变强；加剧

参考例句：

• We must intensify our educational work among our own troops.我们必须加强自己部队的教育工作。
• They were ordered to intensify their patrols to protect our air space.他们奉命加强巡逻，保卫我国的领空。

6 projector   

n.投影机，放映机，幻灯机

参考例句：

• There is a new projector in my office.我的办公室里有一架新的幻灯机。
• How long will it take to set up the projector?把这个放映机安放好需要多长时间？

7 briefly   

adv.简单地，简短地

参考例句：

• I want to touch briefly on another aspect of the problem.我想简单地谈一下这个问题的另一方面。
• He was kidnapped and briefly detained by a terrorist group.他被一个恐怖组织绑架并短暂拘禁。

8 fret   

v.(使)烦恼；(使)焦急；(使)腐蚀，(使)磨损

参考例句：

• Don't fret.We'll get there on time.别着急，我们能准时到那里。
• She'll fret herself to death one of these days.她总有一天会愁死的.

9 posterity   

n.后裔，子孙，后代

参考例句：

• Few of his works will go down to posterity.他的作品没有几件会流传到后世。
• The names of those who died are recorded for posterity on a tablet at the back of the church.死者姓名都刻在教堂后面的一块石匾上以便后人铭记。

10 annular   

adj.环状的

参考例句：

• It was reported that there would be an annular eclipse tomorrow.据报道说，明天有日环食。
• The annular markings on a tree indicate its age.树的环形纹理显示其年龄。

11 timing   

n.时间安排，时间选择

参考例句：

• The timing of the meeting is not convenient.会议的时间安排不合适。
• The timing of our statement is very opportune.我们发表声明选择的时机很恰当。

12 novice   

adj.新手的，生手的

参考例句：

• As a novice writer,this is something I'm interested in.作为初涉写作的人，我对此很感兴趣。
• She realized that she was a novice.她知道自己初出茅庐。

13 avid   

adj.热心的；贪婪的；渴望的；劲头十足的

参考例句：

• He is rich,but he is still avid of more money.他很富有,但他还想贪图更多的钱。
• She was avid for praise from her coach.那女孩渴望得到教练的称赞。

14 astronomers   

n.天文学者，天文学家( astronomer的名词复数 )

参考例句：

• Astronomers can accurately foretell the date,time,and length of future eclipses. 天文学家能精确地预告未来日食月食的日期、时刻和时长。 来自《简明英汉词典》
• Astronomers used to ask why only Saturn has rings. 天文学家们过去一直感到奇怪，为什么只有土星有光环。 来自《简明英汉词典》