Everyone is talking about bird flu. Yes, it is a very dangerous illness that could make people very sick. It will be some months still before we have good medicine
1 bird flu. But that doesn’t mean you can’t do anything to prevent（预防）it now. So far, all the people who have caught bird flu have been those who touched sick chickens or their
2 . So it’s a good idea for people
3 living chickens.
“People
4 go to the markets to buy living chickens to eat, but now they have to change that habit（习惯）,” said Peter Cordingley, a WHO expert（专家）. But if you do touch a sick bird, remember
5 your hands carefully with soap right away . Experts also say having good habits and a healthy body will help you
6 safe from bird flu. For example, do not buy or eat birds that
7 . Do not eat anything that has touched raw（生的） meat. Also, don’t forget to open your windows often and exercise every day.
8 enough sleep is also very important for beating illness. If you feel sick, see a doctor as soon as possible.
9 , no one in China has bird flu. But WHO says children under 12 years old could easily get sick with bird flu. Try to stay away from people who have the flu, and always cover your mouth and nose when you
10 .
| 小题2: | | A．houses | B．droppings(粪便) | C．eggs | D．food |
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| 小题3: | | A．to stay out of | B．to stay off | C．to stay over | D．to stay away from |
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| 小题4: | | A．are used to | B．used to | C．used | D．have used to |
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| 小题5: | | A．washes | B．to wash | C．washing | D．washed |
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| 小题6: | | A．keep | B．to get | C．got | D．keeping |
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| 小题7: | | A．has been checked | B．have been checked | C．has checked | D．have not been checked |
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| 小题8: | | A．Get | B．Have | C．Got | D．Getting |
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| 小题9: | | A．In the past | B．From then on | C．Since then | D．So far |
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| 小题10: | | A．laugh | B．cough | C．cry | D．Sleep |
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2CO+CO2+3H2O，则X的化学式（分子式及有机物的结构简式等都可称为化学式）为（ ）
2CO+CO2+3H2O，反应物中氧原子个数分别为4，反应后的生成物中碳、氧、氢原子个数分别为3、7、6，根据反应前后原子种类、数目不变，则3X中含有3个碳原子、3个氧原子和6个氢原子，则每个X分子由1个碳原子、1个氧原子、2个氢原子构成构成，则物质X的化学式为HCHO．故选C．