摘要： B.意为“还有空位子 .
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(10分)据报道：2011年12月31日深圳宝安沙井39岁患者陈某某，被诊断为人感染高致病性禽流感（H5N1）而引发的多脏器衰竭而死亡。禽流感再一次又引起了人们的高度关注。右图是高致病性禽流感病毒H5N1侵入人体后发生免疫反应的图解，图中A、B、C为有关的物质或结构。请据图回答问题：
（1）物质B的化学本质是 ______________。
（2）物质A为____________，是由效应T细胞分泌，又能诱导生成更多的效应_________ 细胞，这是一种____________调节机制。
（3）效应T细胞与靶细胞密切接触，激活靶细胞内的_____________，并使其通透性、渗透压发生改变，最终___________，释放出病毒与抗体结合，使病毒失去_________________________宿主细胞的能力。
（4）T细胞由__________分化而来,成熟于______________，并随血液和淋巴在体内流动。T细胞在人体免疫应答中除具有图示增殖分化的功能外，还能 ______________。 查看习题详情和答案>>
（1）物质B的化学本质是 ______________。
（2）物质A为____________，是由效应T细胞分泌，又能诱导生成更多的效应_________ 细胞，这是一种____________调节机制。
（3）效应T细胞与靶细胞密切接触，激活靶细胞内的_____________，并使其通透性、渗透压发生改变，最终___________，释放出病毒与抗体结合，使病毒失去_________________________宿主细胞的能力。
（4）T细胞由__________分化而来,成熟于______________，并随血液和淋巴在体内流动。T细胞在人体免疫应答中除具有图示增殖分化的功能外，还能 ______________。 查看习题详情和答案>>
阅读理解。
Never try to work when you are very hungry. If you want to do your homework right after school, you
may want to eat something before getting to work. ①Always do your homework before you get too tired.
Don't wait till very late in the evening, or your homework will seem much harder than it really is. If you
have more than an hour's work, you should give yourself ②a break after an hour. On the other hand, ③you
should work at least half an hour at a time without stopping.
Don't put it off (推迟) until the last minute. If you put off doing your homework, you will have it on your
mind, and you won't enjoy your free time so much. If you put it off until the end of a week or until right
before a test, you will have too much to do. A little each night, enough to keep up with (跟上) what is
happening each day in school, will take the fear out of tests and keep you on top of it.
④每天在同一个时间做作业. This will help you make it a habit. It will make part of your daily work
easier to do, and it will make your free time more enjoyable as well.
may want to eat something before getting to work. ①Always do your homework before you get too tired.
Don't wait till very late in the evening, or your homework will seem much harder than it really is. If you
have more than an hour's work, you should give yourself ②a break after an hour. On the other hand, ③you
should work at least half an hour at a time without stopping.
Don't put it off (推迟) until the last minute. If you put off doing your homework, you will have it on your
mind, and you won't enjoy your free time so much. If you put it off until the end of a week or until right
before a test, you will have too much to do. A little each night, enough to keep up with (跟上) what is
happening each day in school, will take the fear out of tests and keep you on top of it.
④每天在同一个时间做作业. This will help you make it a habit. It will make part of your daily work
easier to do, and it will make your free time more enjoyable as well.
1. 改写①句且句意不变。________ you get too tired, you should ________ doing your homework.
2. ②处的a break意为 __________。
A. a sleep
B. a rest
C. an idea
D. a moment
3. 请将短文的③句翻译成中文。
______________________________________________________________
4. 请将短文的④句翻译成英文。
______________________________________________________________
5. According to the passage, when you have homework to do, you should _______. (可选多个答案).
A. not put off doing your homework
B. do your homework at the same time every day
C. eat something to keep yourself not hungry
D. have a short break after working for half an hour
查看习题详情和答案>>
2. ②处的a break意为 __________。
A. a sleep
B. a rest
C. an idea
D. a moment
3. 请将短文的③句翻译成中文。
______________________________________________________________
4. 请将短文的④句翻译成英文。
______________________________________________________________
5. According to the passage, when you have homework to do, you should _______. (可选多个答案).
A. not put off doing your homework
B. do your homework at the same time every day
C. eat something to keep yourself not hungry
D. have a short break after working for half an hour
听短文，根据文意为下列问题选择最佳答案。
1. What did Tom and Jane want to do one summer?
[ ]
A. They wanted to play in the train.
B. They wanted to climb hills.
C. They wanted to visit another city.
B. They wanted to climb hills.
C. They wanted to visit another city.
2. What happened in the train?
[ ]
A. Tom couldn't find his ticket in his pocket.
B. Jane couldn't find her ticket in her pocket.
C. Neither of them could find their tickets.
B. Jane couldn't find her ticket in her pocket.
C. Neither of them could find their tickets.
3. What did the conductor come to do?
[ ]
A. He came to check the tickets.
B. He came to ask Jane to get off.
C. He came to clean the box.
B. He came to ask Jane to get off.
C. He came to clean the box.
4. Was Jane's ticket really lost?
[ ]
A. Yes, it was.
B. No, it wasn't.
C. I don't know.
B. No, it wasn't.
C. I don't know.
5. How did Tom explain to the conductor?
[ ]
A. Jane had lost her ticket.
B. Jane had gone to the washroom.
C. Jane didn't like to sit but lie on the floor under the seat.
查看习题详情和答案>>
B. Jane had gone to the washroom.
C. Jane didn't like to sit but lie on the floor under the seat.
| 阅读理解。 | ||||||||||||||||||||||||||||||
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| 1. _____ has the most people among these countries. | ||||||||||||||||||||||||||||||
| A. Italy B. Australia C. Britain D. China | ||||||||||||||||||||||||||||||
| 2. How many countries speak English according to the form? | ||||||||||||||||||||||||||||||
| A. 1. B. 2. C. 3. D. 4. | ||||||||||||||||||||||||||||||
| 3. You are visit _____ in the country with the smallest population. | ||||||||||||||||||||||||||||||
| A. the Opera House B. the Great Wall C. the Big Ben D. the Leaning Tower of Pisa | ||||||||||||||||||||||||||||||
| 4. From the form, you can find _____ in Europe (欧洲). | ||||||||||||||||||||||||||||||
| A. no country B. one country C. two countries D. three countries | ||||||||||||||||||||||||||||||
| 5. Which of the following is true according to the information in the form? | ||||||||||||||||||||||||||||||
| A. Australia and Britain aren't English speaking countries. B. Rome is a city in Southern Europe. C. Canberra is the capital of Italy. D. Australia is a country in Eastern Asia. |
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