问题 选择题
△ABC的内切圆O与BC、CA、AB分别相切于点D、E、F,且AB=9,BC=14,CA=13,则AF、BD、CE的长依次为(  )
A.3、4、5B.4、5、8C.4、5、9D.4、5、10
答案

答案:C

阅读理解

阅读理解。

     Like most teenagers in the world, Joso Montanaro a teen artist in Brazil, likes reading and drawing

cartoons. But he is special-his drawings get published (出版).

     Montanaro is now drawing cartoons for Folha. Folha is Brazil's largest newspaper and is known for its

cartoons.

     Montanaro has already been working at Folha for two years. Each week he draws two, there or four

cartoons and sends them to the paper. From those editors choose one for the next day's page. Montanaro

draws about the news of the day. Recently he worked on The Wave-a drawing of the tsunami (海啸) that hit

Japan. Montanaro also likes to draw cartoons about the funny things that happen in Brazilian politics (政治).

     "I like doing political drawings because you can joke about somebody bigger than you." Montanaro says.

     Folha's art director, Mario Kanno, says editors saw something new and different in Montanaro's work."We

brought him in with this idea to show that, yes, young people also read newspapers and can show their ideas

on politics,"Kanno says.

     Montanaro's love for cartoons began when be was only 7 or 8 year old. His dad bought him comics.

Montanaro says these books gave him the ideas that got him drawing. "I think those great works have really

helped me," he says."They remind me that I should draw something in my book every day."

1. What is Montanaro doing for Folha now?

A. He is publishing story books.

B. He is drawing cartoons.

C. He is sending newspapers.

D. He is writing articles.

2. Which of the following is NOT true according to the passage?

A. Folha is famous for its cartoons.

B. Folha is the largest newspaper in Brazil.

C. Montanaro draws one cartoon for Folha every week.

D. Montanaro began to work for Folha two years ago.

3. Why does Montanaro like drawing political cartoons?

A. Because he can show his ideas on politics.

B. Because he is very interested in political jobs.

C. Because he thinks it's easier to draw political cartoons.

D. Because he can make fun of some important people.

4. What made Montanaro draw and helped him a lot in his drawings?

A. The comics his dad bought him.

B. His interest in cartoon films.

C. The fun of drawing cartoons.

D. His dad's ideas about cartoons.

5. What's the best title for this passage?

A. Folha's art director.

B. Brazil's largest newspaper.

C. Teen artist in Brazil.

D. Montanaro's great father.

阅读理解

Scientists are working to develop crop plants that can reduce the amount of water used for agriculture. Almost sixty percent of the world’s freshwater withdrawals from rivers, lakes and other water resources go toward irrigating fields.

Scientists are using biotechnology as well as traditional breeding methods to develop water-saving crops to feed a growing world.

Thomas “Tommy” Carter is a plant scientist in North Carolina. He works for the Agricultural Research Service in the United States Department of Agriculture. He leads Team Drought, a group of researchers at five universities. They have been using conventional breeding methods to develop and test soybeans that can grow well under dry conditions.

Tommy Carter started working on drought-resistant soybeans in 1981. His research has taken him as far as China, where soybeans have been grown for thousands of years.

Farmers in the United States, however, have grown soybeans for only about a century. Tommy Carter says the soybeans they grow are for the most part genetically similar. More differences could better protect crops against climate changes that can reduce production. Those changes include water shortages which could increase from global warming.

The Agriculture Department has a soybean germplasm(胚质) collection, a collection of genetic material passed from one generation to the next. Members of Team Drought studied more than 2,500 examples from the collection.

They looked at ones from the home of soybeans, Asia. They searched for germplasms that could keep plants from weakening and wilting (凋谢)during hot, dry summers in the United States.

Tommy Carter says they found only five. But these slow-wilting lines, he says, produce four to eight bushels(英斗)more than normal soybeans under drought conditions. The yield depends on location and environment.

Scientists are also working on other plants that either use less water or use it better, or both. For example, companies like Monsanto, DuPont and Syngenta have been developing corn with reduced water needs. Monsanto expects to be ready in a few years to market its first corn seeds genetically engineered to resist drought.

68. According to the passage, scientists try to find out how to _______.

A. grow crops with less water

B. increase crop production

C. feed a growing world

D. save the world’s water resource

69. Why did Tommy Carter come to China?

A. He likes traveling.

B. China has a long history.

C. He’s doing research into soybeans.

D. He works for the Agricultural Research Service.

70. What’s inferred from the passage?

A. Climate changes lead to global warming.

B. Water shortages contribute to global warming.

C. Genetically different soybeans need much water to grow.

D. Genetically different soybeans help to fight against damaging climate changes.

71. What do we know about slow-wilting plants talked about in the passage?

A. They yield big profits.

B. They can grow in almost any climate.

C. They seem to be drought-resistant.

D. They need much water for their growth.