Every day, people come into contact with thousands of chemicals. These chemicals are said to be harmless to human health. In fact，the chemicals are considered so safe that we wash with them. We put them on our bodies and even our faces. Other chemical products are used throughout our homes.
By the time you walk out of your front door, you have already been exposed to thousands of chemicals.
On its own, each chemical seems harmless. But in combination with other chemicals, they may become deadly. That is the finding of a two-year study by a high-profile task force of scientists. The task force was told to investigate the cancer-causing possibility of chemical mixtures.
Linda Gulliver was one of 174 scientists on the task force. Their job was to study the cancer-causing potential of 85 chemicals. All 85 are said to be common in the environment.
Ms. Gulliver explains that chemicals have the potential or y to form dangerous mixtures. Even simple minerals can become dangerous when mixed with chemicals found in plastics or beauty products.
Working in groups, the scientists explored how different chemical mixtures could lead to cancer. Ms. Gulliver’s team looked at the ability of different combinations to support the in- crease of malignant (恶性的) human cells.
She says the current way to identify whether chemicals cause cancer is to test them one at a time. This method leads, she adds, to a long list of supposedly “safe” chemicals. She and her team say that approach needs to change.
“We definitely need certain research… to find out what mixtures of chemicals would be more harmful than others; what groups of chemicals, when together, would produce more harmful effects. And at the moment, that is not known.”
An estimated one in five cancers has been linked to chemical exposure. It may turn out that the cancer-causing villain (恶棍) is not a single chemical at all.
1.What effect may one single chemical have on us according to the text?
A. It may let us suffer from cancer.
B. It may not cause danger to us.
C. It may destroy our body.
D. It may let our body make a change.
2.What can we learn about Ms. Gulliver’s research?
A. She has found reasons for five kinds of cancers.
B. She has found that only one chemical can cause cancer.
C. She has found 85 cancer-causing chemicals.
D. She is not sure what mixtures of chemicals are more harmful.
3.According to the text? we can infer that the study .
A. is just wasting time and money
B. is in need of great efforts
C. will cause panic in public
D. will be resisted by the public
4.What is the best title for the text?
A. Mixtures of Safe Chemicals May Cause Cancer
B. Being Exposed to One Chemical Is Dangerous
C. How Mixtures of Safe Chemicals Come into Being?
D. What Is the Real Cause for Cancer?
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假期作业暑假成长乐园新疆青少年出版社系列答案科目：高中英语 来源：山东省淄博市2016-2017学年高一下学期期末考试英语试卷 题型：七选五
Do you know how to deal with failure at school? Four steps will help you get the most out of each failure and more on.
1. When you feel bad after failing, talk with your parents or good friends, or any other adult. Then decide to take the duty to improve yourself. Read the teachers’ comments on your test carefully.
Ask yourself what you were trying to do and why you failed. 2.Maybe you didn’t have all the information you needed; maybe you made a mistake or a poor decision. If so, give yourself a pat on the back. Fewer people ever get something right the first time they try it, and often it takes them many times. 3.Sometimes the failure isn’t because of something you did or didn’t do; it is someone else’s fault. But don’t spend time blaming them; instead, move on toward your goals.
4. . Review the situation to see what your choices are. There is a different between making a decision and giving up. Deciding to follow a better way is one thing; simply walking away means you really have failed.
Keep trying again. Successful people are different because they choose their next steps instead of just reacting to feelings. If a goal still important to you, figure out what to do and go after it again.5..
A. No pains, no gains.
B. Don’t give up easily
C. Failure is unavoidable
D. Remove your bad feelings
E. If it isn’t, do your best on something else
F. Actually it was because you were very lazy
G. Usually it was because you were trying out a new skill or learning a new subject.
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假如你是李华，计划和同学去敬老院（nursing home）陪老人们过重阳节（the Double Ninth Festival）。请给外教露西写封邮件，邀她一同前往，内容包括：
1.出发及返回时间；
2.活动：包饺子、表演节目等。
注意：
1.词数100左右；
2.可以适当增加细节，以使行文连贯；
3.结语已为你写好
Dear Lucy,
________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Looking forward to your replay .
Yours，
Li Hua
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I find _____ stressful to study in high school。
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假定你是李华，你校将举办一场交通安全知识讲座，你打算邀谙外教John参加。就此请用英语给他写封邮件，主要内容包括：
1. 告知报告的时间和地点；
2. 介绍讲座的主题和内容；
3. 自荐当他的翻译，期待他出席。
注意：1. 词数100左右；
2. 可以适当增加细节，以使行文连贯；
3. 开头和结尾已为你写好，不计入总词数。
Dear John,
I’m writing to tell you a piece of good news.____________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________
Yours,
Li Ilua
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英语课上,老师要求同桌同学相互修改作文。假设以下短文为你同桌所写,请你对其进行修改。短文中共有10处错误,每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏词符号（/\）,并在此符号下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线,并在该词下面写出修改后的词。
注意：1、每处错误及其修改均仅限一词；
2、只允许修改10处，多者（从第11处起）不计分。
Weeks ago, one of my classmate brought in a very large suitcase and placed it under his bed. Though we lived on the ground floor, his suitcase soon got wet. He took it out and after drying it, he put it on his desk. My desk happened to being opposite his. It was such the large suitcase that it not only occupied the whole of his desk but also half of my as well. I was so annoyed that I pushed it angry forward. I pushed a bit of too hard and the suitcase fell his desk. Seeing this, he flies into a temper and shouted at me. Then we had a bitter quarrel. Some days later, I regretted having done that. Lived in a room, we should learn to get on well with one another.
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科目：高中英语 来源：辽宁省沈阳市2016-2017学年高二下学期期中考试英语试卷 题型：阅读理解
The Score: Looking for Jobs Online
Analysis shows that record numbers of Americans are visiting Job Search sites; younger women make up the biggest audience. The recent flood of advertisements from Monster.com and Career Builder has reminded us that the New Year is a time to re-evaluate one's current job and perhaps seek a better career.
In Search of Skilled Workers, Employers Go to Summer Camp
With skilled-labor shortages looming, some employers are moving to solve the problem by winning the hearts and minds of the young -- the very young. In an effort to tap future workers in middle school or earlier, big employers, including IBM and Boeing, are increasing their backing of career-driven summer camps. The camps promote kids' interest in all kinds of fields. The efforts are yielding new opportunities for families, and insights into how to help kids explore promising careers.
More Women Decide to Extend Careers
Three years ago, after a long career with FedEx, Anne made a difficult decision: She accepted an early retirement offer when the company was downsizing.
"It was a bit of an identity crisis for me," says Anne, who is in her early 60s and divorced. "I wasn't sure what I wanted to do." After a lengthy search, she found another position in public relations at the University of Tennessee Health Science Center in Memphis. "I needed the structure of a full-time job, the stimulation of working with others, and the reward of being productive," she says. "The income was also welcome.”
1.On the website “Monster.com” we can see lots of advertisements about .
A. clothes B. foods
C. monsters D. jobs
2.In order to get skilled workers for the future, most big companies .
A. go to world-famous universities to hire employees
B. begin to support the career-driven summer camps
C. begin to train middle school students even earlier in many ways
D. spend much money on training their employees
3.From the last paragraph we can know that .
A. Anne really didn’t want to retire early
B. Anne enjoys a higher salary than before
C. Anne was very happy to retire and found a new job
D. Anne found the present job easily
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Once a man was walking along a beach. The sun was shining and it was a beautiful day. In the distance he could see a person 1.(go) back and forth between the surf’s edge 2. the beach. As the man approached, he could see there were hundreds of starfish(海星)3. (lie) on the sand as 4. result of the natural action of the tide.
The person seemed to be 5. (absorb) in the apparently useless task. There were too many starfish. Many of them were sure to die. When he came near, the person continued the task of 6.(pick) the starfish one by one and throwing them into the ocean.
As he came up to the person, he said, “You must be crazy. There are 7.thousand) of miles of beach 8.(cover) with starfish. You can’t 9.(possible) make a difference.” The person looked at the man. He then bent down and picked up one more starfish and threw it back into the ocean. He turned back to the man,10.(say), “It surely makes a difference to 
that one!”
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科目：高中英语 来源：黑龙江省伊春市2016-2017学年高一下学期期中考试英语试卷 题型：阅读理解
Swimming is very popular. People like swimming in summer because water makes people feel cool. If you like swimming and swim in a wrong place, it may not be safe. These years, a lot of people died when they were enjoying themselves in the water, and most of them were students. But some people are not careful in swimming. They often think they swim so well that nothing will happen to them in water. Summer is here again. If you go swimming in summer, don't forget that better swimmers have died in water. They died because they were not careful not because they could not swim. So don't get into water when you are alone. If there is a "No Swimming" sign, don't get into water. If you remember these, swimming will be safer.
1.People like to swim in summer because ______.
A. it makes them strong B. they are free
C. they feel cool in water D. it is safe
2.Some swimmers die in water because ______.
A. they think they can swim well B. they are not strong enough
C. they are not careful D. they like swimming very much.
3.The writer wants to tell us ______.
A. that we must be careful in swimming B. that we should go swimming in summer
C. that swimming is a good sport D. that swimming is not safe
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