3、Special trees that grow faster, fight pollution, produce better wood, and even sense chemical attacks are being planted by scientists in the US．
When 40 per cent of Hawaii's US$14 million-a-year papaya （木瓜）industry was destroyed by a virus five years ago, work began on creating genetically engineered （转基因的） trees．
Researchers successfully introduced seeds that were designed to resist the virus．Since then, more and more people have been testing genetically engineered trees．
Some researchers put special bacteria into trees to help them grow faster and produce better wood． Others are trying to create trees that can clean polluted soil．
Meanwhile fruit farmers are looking for trees that are strong enough to resist worms, and paper companies want trees that produce more wood and therefore more paper．
The Pentagon （五角大楼，美国国防部所在地） even gave the researchers US$500,000 this year after they developed a pine tree that changes its colours if it senses a chemical attack．
So far, the poplar, eucalyptus （杨树与桉树）, apple and coffee trees are among those being engineered． All this is can be done today because we have a better understanding of tree genomes （基因组）．
However, some people fear that the genetically engineered trees will cause dangerous results．They are worried that the new trees will breed with natural species and change the balance of the forest environment．
"It could be destructive," said Jim Diamond, an environmentalist．"Trees are what is left of our natural environment and home to many endangered species．"
But researchers insist that science could give nature a fighting chance against both natural and man-made dangers．
They hope to answer the critics by stopping the new trees from breeding, so their effect on the environment can be controlled．
1．Which kind of tree is not the ones that scientists are planting in the US?
A． Trees that worms can't hurt．
B． Trees that can protect themselves at a chemical attack．
C． Trees that can resist wind better．
D． Genetically engineered trees．
2．What caused the American scientists to work on special trees?
A． They think science could give nature a fighting chance against both natural and man-made dangers．
B． Great numbers of trees have been lost due to attacks by viruses．
C． Researchers successfully introduced seeds designed to resist the virus．
D． Tree genomes are mapped out so scientists know how to improve trees．
3．Which of the following was probably the first kind of trees being engineered?
A． Papaya． B． Pine． C． Apple． D． Poplar．
4．Why did critics think engineered trees dangerous? Because _______．
A． these trees can destroy the balance of nature
B． everything except trees has been genetically engineered
C． trees are home to many endangered species
D． these trees may affect normal trees
1、目前，许多学校对学生采取封闭式管理，学生对此看法不一。请根据下表所提供的信息，写一篇短文，谈谈自己的看法。（字数120左右）
有的同学认为
学校限制我们的自由；学生和社会接触少；学生的兴趣和爱好不能得到充分的发展。因此……
学校是学习知识的地方：学生应该安心在学校里学习；学生缺乏自觉性，离开了老师，可能会……
你的看法：
注意：1．不要逐字翻译。2短文开头已给出，不计人总词数。
Nowadays a lot of schools keep their students in school all day long．……
29、We'll have a holiday．What about going to the West Lake?
A．two days B．two-day C．two-days D．two days'
28、—Where is your brother?
—I think he's still in bed，but he might just be in bathroom．
A．/; / B．the; the C．the;/ D．/; the
27、The thieves ran away separately， carrying a bag．The police then divided into groups to follow them immediately．
A．all B．each C．every D．either
26、
Half of US mothers are not getting enough sleep and they believe getting more rest would make them better parents, according to a US study. A nationwide survey of 500 mothers by research firm Braun Research found 54 percent of respondents said they were not getting enough sleep. Full-time working mothers were suffering the most with 59 percent saying they were not getting enough sleep. Half of the working mothers said they were getting six or fewer hours sleep a night. Stay-at-home moms felt better with 48 percent saying they were sleep deficient. The survey found 52 percent of America's mothers believed that getting more sleep would make them better parents and 65 percent said it would make them happier.
But even when mothers do get into bed, many lie awake at night with 36 percent thinking about the next day's tasks, 25 percent stressing about the family's finances and 24 percent worrying about family issues. "Consistently not getting enough sleep and lying awake at night worrying about day-to-day challenges could be a sign of insomnia," said sleep specialist Suzanne Griffin, a clinical doctor from Georgetown University Hospital in Washington. But the survey found although sleep problems were among mothers, four out of five had not spoken to their doctor about it and 82 percent never considered using sleeping pills.
Griffin suggested that mothers stick to a sleep schedule, avoid alcohol and caffeinated drinks late in the afternoon and before bedtime, and create a sleep environment that is cool, quiet, dark and comfortable.
1．Which of the following is related to the underlined word in the passage? .
A．bad health B．illness C．good sleep D．bad sleep
2．According to the US study, the following statements are true except that .
A．most mothers didn’t get help from their doctors when they had sleep problems.
B．half of the full-time working mothers said they were not getting enough sleep.
C．270 mothers were not getting enough sleep.
D．some mothers can’t sleep well because of many family problems.
3．What would make moms better parents according to the survey? .
A．Staying at home B．Sticking to a good sleep schedule
C．Getting more rest D．Creating a good sleep environment
4．The survey is most probably beneficial to in the US.
A．mothers and their children B．the whole family
C．mothers D．mothers’ sleep
24、—What a wonderful speech he made!
—Really good! I could hardly imagine myself to make a speech in public.
A．make B．to make C．making D．being made
