Unit 4 Pygmalion
李仕才
一、阅读理解。
Vitamin B could help reduce the effects of the most dangerous type of air pollution, according to a new study published on Monday. In the first study of its kind, a team of international rearchers looked into the damage caud by one of the pollutants that have the verest impact on health—PM 2. 5.
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They found that Vitamin B supplement could effectively reduce the impact of the tiny particles(颗粒)on the human body, although they stresd that the rearch was in its early stages. According to the WHO, 92% of the world’s people are living in places where the PM 2. 5 level goes beyond the recommended level. So it’s urgent to find a solution to the problem.
According to this study, published in the PNAS, 10 volunteers were initially expod to clea
广东顺德美食n air and given a placebo(安慰剂)to check their baline respons. The group then kept on taking placebos for four weeks before being expod to heavily polluted air from downtown Toronto, where an estimated 1, 000 cars pasd every hour. The bad air was delivered to the volunteers through an “oxygen type” face mask. The experiment was then repeated, with each volunteer taking a Vitamin B supplement daily, made up of 2. 5 mg of folic acid, 50 mg of Vitamin B6, and 1 mg of Vitamin B12.
Vitamin B6 can be found in liver, chicken, nuts and other things, and Vitamin B12 in fish, meat, eggs, milk and some cereals. The rearchers found that four weeks of Vitamin B supplements reduced the damage of PM 2. 5 effects by 28-76%. The results emphasized how prevention at an individual level could be ud to fight against the damage of PM 2. 5, the rearchers said.
【文章大意】本文主要通过一些实验告诉我们维生素B对减轻PM 2. 5对身体的伤害有什么样的功效。
1. What’s the newly discovered effect of Vitamin B in Paragraph 1?
A. It can be ud to replace other vitamins in our daily life.
B. It can help lower the air pollution level in the open air.
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C. It can reduce the impact of PM 2. 5 on human bodies.
D. It can get rid of the pollutants remaining in our bodies.
【解析】选C。细节理解题。根据第一段“Vitamin B could help reduce the effects of the most dangerous type of air pollution, according to a new study published on Monday. ”, 可知维生素B可以减少造成空气污染的危险物质的影响, 而后一句又提到了对健康危害最大的危险物质是PM 2. 5, 故选C。
2. What can be learned from the cond paragraph?
A. Further study about the effect of Vitamin B needs to be done.
B. Vitamin B is the most important to human’s health.
C. The tiny particles in the air are made up of PM 2. 5.
D. 92% of the world’s people are affected by PM 2. 5.
【解析】选A。细节理解题。根据第二段“. . . although they stresd that the rearch was in its early stages. ”可知关于维生素B的功效的研究还处于初期阶段, 所以仍需进一步的研究探索。
3. How did rearchers draw the new conclusion about Vitamin B?
A. By referring to a journal.
B. By performing experiments.
C. By interviewing scientists. 姜鹏个人资料
D. By comparing vitamins.
查看网速【解析】选B。推理判断题。根据倒数第二段“The experiment was then repeated, with each volunteer taking a Vitamin B supplement daily, made up of 2. 5 mg of folic acid, 50 mg of Vitamin B6, and 1 mg of Vitamin B12. ”, 中的experiment表明研究者是通过做实验得
出新的结论的。
4. You may read the passage on a website about ________.
A. environment B. medicine
C. education D. health
【解析】选D。推理判断题。本文主要通过一系列实验告诉我们维生素B可以减轻PM 2. 5对我们身体的伤害, 主题围绕着健康展开, 故选D。
二、单句语法填空
1．We had no ________ (hesitate) in helping the sufferers when the terrible earthquake hit the country.慈鲷鱼
答案：hesitation have no hesitation in doing ... “毫不犹豫地做……”。
2．________ (classify) so many books in libraries usually takes them lots of time.
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答案：Classifying 句子中缺少主语，且指一般性情况，故应填动名词classifying，在句中作主语。
3．Generally ________ (speak), youths of eighteen are too young for such work.
答案：speaking generally speaking “一般来说”。
4．What you said has led to the ________(mistake) belief that
smoking is not harmful.
答案：mistaken 修饰名词belief应用形容词，故填mistaken “错误的”。
5．The school makes it clear that essays from online should not be pasd off ________being written by the students.
答案：as pass ... off as ... “把……看作或冒充成……”。
6．________if we invited them to come here for a party instead?
关键在于落实心得体会
答案：What 固定句式what if “倘使/如果……将会怎样？”。
7．Parents should teach their children to behave ________(proper) in public.
答案：properly 此处应用副词来修饰动词behave, 故填
properly。
8．They made rude ________(remark) about her appearance.
答案：remarks make remarks/a remark about ... “对……发表评论”。
9．The information you gathered is ________ great help to me.
答案：of “of＋抽象名词”相当于其对应的形容词，of great
help＝very helpful “非常有帮助”。
10．________(take) according to the instructions, the medicine has no side effect.
答案：Taken 所给动词与其逻辑主语medicine之间为被动关系，故用过去分词作状语。
三、完形填空。
I was surprid when I received a short message from my father wishing me a happy birthday.
I had __1__ to hear from my mother, my grandmother and my other relatives— __2__ never from my father. Lying in bed, __3__ of my father flooded back.
