测土配方对种植生产有何益处？

已知5张卡片上分别标有长度为2，3，4，5，6的线段．

（1）请问从中任取3张，有哪些不同的结果？请全部写出来．

（2）抽出的3张卡片上的线段恰好能组成一个三角形的概率是多少？

（3）抽出的3张卡片上的线段恰好能组成一个直角三角形的概率是多少？

第二节（共5小题；每小题2分，满分10分）

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

51  . However, the real movie capital is Mumbai, in India. Mumbai used to be known as Bombay, and so the film industry there is called “Bollywood”. Bollywood makes twice as many movies each year as Hollywood – more than 800 films a year.

52  .For one thing. Bollywood movies are much longer than most Hollywood movies. Most Bollywood movies are more than three hours long, and contain singing, dancing, action, adventure, mystery, and romance. Because Bollywood films contain so many different features, this style of film is sometimes called a “masala” film.（“Masala” is an Indian word for a mixture of spices.）

53  .It takes much longer to make a movie in Hollywood than in Bollywood. In fact, filming may begin on a Bollywood movie before the script（剧本）is even finished. The director and writer can make up the story while the film is being made.  54  .

Bollywood actors are very popular and some are in such high demand that they may work on several movies at the same time.  55  . Since most Bollywood movies follow the same kind of story, shooting scenes for several films at the same time is not a big problem for actors or directors. This also helps keep the cost of Bollywood movies lower than the cost of Hollywood movies. The average Bollywood film, with a budget（预算）of only two million U. S. dollars, seems very cheap compared to the average budget of sixty million U.S. dollars for a Hollywood film – thirty times as much!

A．Another big difference between Bollywood and Hollywood movies is the way the movies are made.

B．Bollywood produces more movies than Hollywood.

C．Most people think that the capital of the movie world is Hollywood, in the United States.

D．They may even shoot scenes for several films on the same day using the same, clothes and scenery.E．Only Indian people can understand Bollywood movies.

F．Sometimes they will even write the script by hand instead of taking time to type it.

G．The movies from Bollywood are very different from Hollywood movies.

________ great progress you’ve made! You parents must be proud of you.

A．How

B．What

C．How a

D．What a

第三部分阅读理解（共20题，每小题2分，满分40分）

Recently, tests have proved that Beethoven died from lead poisoning. Bill Walsh directed the Beethoven Research Project. Mr. Walsh and his team examined pieces of bone belonging to Beethoven. They found a large amount of lead in the bone pieces. They said the lead levels were equal to those found in pieces of his hair in earlier studies of other scientists.

Genetic tests proved the bone pieces and his hair came from Beethoven. The research also examined bone fragments from someone else who lived during the same period. Both were from the top of the skull. The fragments from Beethoven had more lead than those from other person. Their study didn’t find measurable levels of cadmium(镉) or mercury(汞), which scientists used to consider were the causes of his health problems.

Beethoven was sick for much of his life. He experienced strong stomach pains, a sign of lead poisoning, and a change of personality when he was around 20. he also got angry easily, and suffered from depression and hearing loss. His health problems became worse as he grew older.

Walsh said the lead levels found in his skull suggested that the metal might have been present in his body for many years. He said although there had been recognized cases of deafness caused by lead poisoning, there was no strong evidence to suggest that lead poisoning was the cause of his deafness.

Beethoven visited many doctors to find a cure for his health problems, in a letter he wrote to a friend, he urged researchers to examine his body after he died so that other people would not have to suffer as he did.

61. If too much lead is in a person’s body, he will______.

A. suffer hearing loss             B. get angry easily 

C. suffer serious stomach pains     D. lose most of his hair

62. From the passage we can learn that_______.

A. this is the first research into the cause of Beethoven’s death

B. any amount of lead will do great harm to people’s health

C. more lead was found in Beethoven’s bones than in his hair

D. scientists used to think that his death was caused by other metals instead of lead

63. In which section of the newspaper might you read this report?

A. Health.   B. Technology.   C. Entertainment.   D. Culture.

64. What is the best title of the passage?

A. A surprising discovery about Beethoven   B. Beethoven died from lead poisoning

C. Lead--- a killer metal for human beings    D. New examination of Beethoven’ body  

过度包装有什么危害？