[单项选择]
White rice is the world’s most popular form office. But it goes through a milling process that removes many nutrients (营养成分). As a result, people who eat a poor diet based on white rice may not get enough vitamin A.
Each year about 250,000 to 500,000 children go blind from vitamin A deficiency. The World Health Organization (WHO) says haft of them die within a year of losing their sight. Vitamin A deficiency is a problem especially in Africa and Southeast Asia.
So scientists thought of an answer. They combined white rice with plant compounds that the body can change into vitamin A. These plant colorings give the rice a golden color.
The scientists also thought of a plan to give away this Golden Rice for free to poor farmers. But the rice cannot be made using traditional methods. The scientists worked for ten years, until 1990, to develop the technology to add genes to rice. Then it took nine more years to get the genes they wanted into the see
A. Because they are short of food
B. Because they feed on white rice
C. Because white rice contains no vitamin
D. Because white rice has no nutrients

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[单项选择]White rice is the world’s most popular form office. But it goes through a milling process that removes many nutrients (营养成分). As a result, people who eat a poor diet based on white rice may not get enough vitamin A.
Each year about 250,000 to 500,000 children go blind from vitamin A deficiency. The World Health Organization (WHO) says haft of them die within a year of losing their sight. Vitamin A deficiency is a problem especially in Africa and Southeast Asia.
So scientists thought of an answer. They combined white rice with plant compounds that the body can change into vitamin A. These plant colorings give the rice a golden color.
The scientists also thought of a plan to give away this Golden Rice for free to poor farmers. But the rice cannot be made using traditional methods. The scientists worked for ten years, until 1990, to develop the technology to add genes to rice. Then it took nine more years to get the genes they wanted into the seed.
Professor
A. In 1980
B. In 1990
C. In 2000
D. In 2004

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[单项选择]

White rice is the world’s most popular form office. But it goes through a milling process that removes many nutrients (营养成分). As a result, people who eat a poor diet based on white rice may not get enough vitamin A.
Each year about 250,000 to 500,000 children go blind from vitamin A deficiency. The World Health Organization (WHO) says haft of them die within a year of losing their sight. Vitamin A deficiency is a problem especially in Africa and Southeast Asia.
So scientists thought of an answer. They combined white rice with plant compounds that the body can change into vitamin A. These plant colorings give the rice a golden color.
The scientists also thought of a plan to give away this Golden Rice for free to poor farmers. But the rice cannot be made using traditional methods. The scientists worked for ten years, until 1990, to develop the technology to add genes to rice. Then it took nine more years to get the genes they wanted into the see
A. addition
B. average
C. increase
D. shortage

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[填空题]Movies are the most popular form of entertainment for millions of
Americans. They go to the movie to escape their normal everyday existence (1) ______
and to experience the life more exciting than their own. They will choose to
see a special film because they like the actors or because they hear the film (2) ______
has a good story. But the main reason that people go to see a film is to (3) ______
escape. Sitting in the dark theatre, watching the images on the screen,
they enter another world that is very current to them. They become (4) ______
involved with the life of the characters in the movie and for two hours, they (5) ______
forget all about their own problems. They are in a dream world where things
often appear to be more romantic and beautiful than their life. The biggest (6) ______
three factories are in Hollywood, the capital of cinema industry. Each year,
Hollywood studios make hundreds of movies that are sho

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