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通用塑料改性后，也无法替代工程塑料。 A. 对 B. 错
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单项选择题
"Troublemaker"was what was given to my friend Peter by his teachers. They also said that he had no future and no hope! But now I suggest that anyone who said that should say"sorry"to him.
Peter finished Grade Nine, and then he went to study at a technical college. He became a leader of a group of bad boys. After graduation he had nothing to do, so he just hung around by the market with his friends.
It looked like nothing could change his life. It was not until the day that his father died. He left the boys and went to help his mother who sold food by the roadside.
He really pitied his mum and wanted to do something to support her. He loved reading cartoon(漫画) books and had been collecting them for years, so he decided that he should sell them. Soon he realized that his books were very popular. So he made up his mind to set up his' own business. He went around buying cartoon books from other people. He bought them for 25% and then sold them for half price.
These days, he doesn't have to go around looking for cartoon books because there are always people coming to his shop to sell their old ones. He now has a monthly income of about 55,000 baht(泰铢).
He was a " troublemaker" to his teachers but he is a hero to me. If you are judged by your teachers as a"bad student". I suggest you ignore what they say. Just do your best in everything. Don't give up so easily. Believe me. one day you could be successful ,too.
Why does the author think some people should say "sorry" to Peter?
A.Theyconsideredhimhopeless
B.Theyrefusedtohelphim
C.Theymadehimgiveuphisfriends
D.Theylookeddownonhisparents
单项选择题
裁剪原理的基本原理是通过删减系统中存在问题的元素实现系统的改进。（ ）
单项选择题
In 2008, the United States Department of Agriculture (USDA) wanted to know if all the school lunches served to students were healthy. The answer was a big, fat NO!
The USDA found that most American schools served lunches with too much fat and salt. They also found that most of the fruits and vegetables in the lunches came from cans(罐头). Canned fruits and vegetables are not as good as fresh ones.
The USDA gives schools food and money to make lunches. But schools make up their own menus. Some make healthy lunches. Most do not. Now the USDA wants all schools to serve more healthy lunches. They want schools to follow the USDA's guidelines for balanced (均衡) meals.
Mike Sanders, in charge of the USDA in 2008, said the USDA should teach school workers how to make healthier lunches. "A good school lunch is just as important as a good textbook," Sanders said. He said that children also need to learn about healthy foods.
The USDA is working off a new program--Fresh Start. It will give schools more fresh fruits and vegetables. Fresh Start will also help schools change their lunches to make them healthier.
To find the best way to change lunches, the USI)A held meetings with parents, school leaders,doctors, and cooks.
Children already eat healthy lunches at Chief Joseph School in North Saratoga, Oregon.They have whole -wheat bread with low-fat cheese, and low-fat milk.
What is the goal of the Fresh Start program?
A.Employinggoodcooksforschools
B.Sellingfreshfruitsandvegetables
C.Findingabetterwaytotalkwithparents
D.Helpingimprovetheschoollunches
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