What's the conclusion of the passage towards the controversial issue of GM crops？
A. GM crops could be environmentally beneficial and thus would be an essential tool for helping to feed the world's burgeoning population.
B. GM crops cause too many concerns which would finally lead to restricting the planting of GM agricultural products.
C. The reassuring scientific findings bring more confidence in GM agricultural products.
D. As there are both supportive and negative findings of GM plants, the issue is till open to debate.
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听力原文：W: You don't look smart this morning. I can see you're not happy. Come on, what happened？
M: I had never expected this would have happened to me. We had a power failure at home last night and I missed most of the football match.
Q: What can we infer from the conversation？
(19)
A. The man is a football fan.
B. The man needs the woman's help.
C. The men didn't watch TV last night.
D. The man often has power failure at home.
The author of the passage intends to ______.
A. ware people against the population explosion in the near future
B. compare the demographic growth pattern in the past with that after 1650
C. find out the cause for rapid increase in population in recent years
D. present us a clear and complete picture of the demographic growth
Office 2003和Windows XP都是应用软件。 ()
A. 正确
B. 错误
Which of the following statements about Chinese immigrants in America is NOT TRUE？
A. Before 1880s, Chinese people were allowed to come to the United States but they were denied the right of becoming American citizens.
B. From 1882 to 1965 no Chinese were permitted to come to United States because of the Chinese Exclusion Act.
C. The general revision of American immigration laws which allow more Chinese to settle in US was the outcome of World War II.
During the World War II, Chinese were allowed to immigrate again, but the number was controlled.
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