高二英语上学期单元测试题(2)
C.
One cause of the current food crisis is drought.Food prices are high in part because of dry weather in places as far distant as Spain and Australia.Around the world, the amount of land affected by drought has doubled in the past thirty years.And scientists concerned about climate change believe it will cause more drought in many areas in the future.
A lot of research is going into efforts to develop drought-resistant crops.One project involves tobacco plants genetically engineered to keep their leaves during water shortages.They chose tobacco because it has big leaves.Also, it grows fast and has structural similarities with some other plants.
The researchers did an experiment with two groups of tobacco plants.They worked with a set of normal plants and a set of transgenic plants.These had a gene added to interfere with the biological causes of leaf loss during drought.
The researchers put all the plants in a greenhouse to grow under normal conditions for forty days.Then, for fifteen days after that, the plants did not receive any water.
The normal plants lost their green color.Finally, they lost their leaves.But the researchers say the transgenic plants kept their leaves and their color.
After the fifteen dry days, all the plants were watered again for a week.The transgenic plants returned to normal growth, and their seed production was close to normal.But the other plants all died.
In addition, the researchers found that the plants could survive on only thirty percent of the normal amount of irrigation water.Yield loss was minor, they said.
The findings appeared late 2007 in the Proceedings of the National Academy of Sciences.The University of California has applied for patent protection for the technology.
The researchers expect to move forward with field testing of the transgenic tobacco in late August.They hope for similar results with crops like tomatoes, rice, wheat and cotton.
66.It can be inferred from Paragraph1 that _______
A.the amount of land affected by drought has doubled in the past thirty years in the world
B.drought is the only cause to lead to the current food crisis.
C.food prices will be higher in the future with the drought areas extending
D.food prices has nothing to do with the climate change in the world
67.One project chooses tobacco plants because __________
A.planting tobacco can bring in great profits.
B.tobacco plants have large leaves and structural similarities with some other plants
C.tobacco plants grows fast
D.Both B and C
68.From the beginning to the end, the experiment with two groups of tobacco plants lasts for at least _______ days
A.40 B.55 C.62 D.77
69.The conclusion they can draw in the experiment is that________
A.the two groups of tobacco plants are the same drought-resistant crops.
B.the transgenic plants can return to the normal tobacco plants
C.the transgenic plants need more water than the normal ones
D.the transgenic plants need less water and the decrease of production is small
70.The next aim of the experiment is ______
A.to apply for patent protection for the transgenic technology
B.to increase the production of the transgenic plants
C.to hope for similar results with other crops .
D.to move forward with field testing of the transgenic tobacco
D.
Before refrigerators, homes usually had ice boxes.But another way to keep food cool without the need for electricity is to use an evaporative cooler.This is easy to make and does not even use ice.
A common design is a tall box with food placed on several shelves inside.The shelves are pieces of metal with many small holes through them.The sides of the box are covered with pieces of thick cloth.
Containers of water are placed at the top and bottom of the cooler.The ends of each piece of cloth lie in the water so the cloth stays wet.
Put the cooler in the open air but not in the sun.Air will pass through the wet cloth.The inside of the box will stay several degrees cooler than the outside air temperature.And this may be cool enough to keep foods fresh at least for a short time.
The best way to prepare foods for storage is at harvest time while still in the field.
Place the harvested items on a clean surface or directly into storage containers.Usually it is better not to remove outer leaves from fruits and vegetables before storage.Without the leaves, food can become dry.
Some fruits and vegetables must be stored at zero to four degrees Celsius.Any colder, and they might be damaged.Others need four to eight degrees.And still others must be stored above eight degrees.
Wet the fruits and vegetables so they do not become too dry.The best time to do this is before storage.Cover the items in plastic once they reach the right "critical temperature" for storage.Most fruits and vegetables need the relative humidity in storage to be kept between eighty-five and ninety-five percent.
Finally, leave space between the food containers and the walls of the storage area so air can flow.Keep the space clean.And try not to open the doors too often.
71.The passage mainly deal with _________
A.helping foods keep their cool
B.how to use refrigerators correctly
C.how to make an evaporative cooler
D.how to save electricity
72.According to the passage, there are ______ ways mentioned to keep food cool.
A.two B.three C.four D.five
73.To make an evaporative cooler, we need the following materials EXCEPT ________
A.a tall box with several shelves inside.
B.pieces of thick cloth.
C.containers of ice
D.pieces of metal with many small holes through them
74.The passage implies that _______
A.the best way to prepare foods for storage is at harvest time while still in the field.
B.using an evaporative cooler can keep foods fresh for a long time.
C.different fruits and vegetables need different temperature conditions
D.remove outer leaves from fruits and vegetables can keep them fresh and wet .
75.According to the process of storage, the following statements are true EXCEPT ____________
A.placing the evaporative cooler in the open air but not in the sun.
B.placing the harvested items directly into storage containers
C.wetting the harvested items before storage.
D.opening the doors to observe the temperature inside the cooler from time to time
第Ⅱ卷 (共45分)
第四部分 书面表达(共两节，满分45分)
第一节 阅读表达(共5小题;每小题3分，满分15分)
阅读下面短文并回答问题，然后将答案写到答题卡相应的位置上(请注意问题后的字数要求)。
〔1〕 A recent survey by the Shanghai Municipal Center for Eye Disease Prevention and Treatment covering about 5,000 students found that 51% of primary and high school students were either nearsighted, farsighted, or were suffering from tired or misaligned eyes, or other inherited conditions.More than 92% were myopic.
〔2〕The percentage of students suffering from vision problems rises as they progress up the school grades in a competitive schooling system.
〔3〕More than 28% of primary school children have vision problems.The percentage doubles as they enter junior high, to 62 percent.And at the 11th grade, when they are preparing for the college entrance examination, 87 percent have bad vision, most of them suffering from nearsightedness.
〔4〕 Reading at close distance for a long time, watching too much TV, and playing computer games, while doing little or no outdoor exercise, is contributing to the problem, the survey said.Improper lighting in classrooms is also a major cause.
〔5〕 Cong Haiying, an official with the Shanghai municipal education committee, said students spend most of their time in the classroom.
〔6〕 In 2006, lighting in some classrooms was improved and the eyesight of students monitored."It showed an improvement," Cong said.
〔7〕The lighting in one-third of classrooms in primary and high schools will be improved this year.And by 2010, all of them will be brighter and the percentage of bad vision__________.They are going to hire experts to lecture parents and students on how to maintain good eyesight.
〔8〕 Zhang Lei, of the New Vision Eye Clinic at Ruijin Hospital, said improved lighting will help, but not much.
〔9〕The situation will not improve if students continue to be burdened with a lot of homework and extra lessons.If improved lighting works, children today should have better eyesight that those of 50 years ago.But it is the opposite. "Myopia develops slowly in healthy bodies, but most Chinese students seldom spend much time outdoors.If it is impossible to ease the workload, but it would help to have regular eye checks, and rest the eyes as often as possible," Zhang said.
1.List three causes that might lead to various eye diseases based on the text.(Please answer within 15 words)
① ________ ② _________ ③ _______________
2.What’s the main idea of Passage? (Please answer within 10 words)
________________________________
3.Fill in the blank in paragraph 7 with proper words.(Please answer within 6words)
_________________________________________
4.Which sentence in the text is the closest in meaning to the following one?
Though the students’ burden is still heavy at present, having eye checks or doing eye exercises to make eyes relaxed can protect their eyes in some way.
_________________________________________
5.Translate the underlined sentence in Paragraph 9 into Chinese.
_________________________________________
第二节 写作(满分30分)
假设你是李华，李明是你的同班同学，每次考试总是英语考不好，感到很苦恼。请根据下列要点用英语给他写一封信：
*帮他分析原因
*给他提出建议
*陈述你帮助他的具体打算
注意：词数120-150
Dear Li Ming,
高二英语上学期单元测试题答案
l一5 AACBC 6一10 BACBC 1l—15 ABCAC 16—20 CCBAB
21—25DDBBD; 26-30ABAAA;31—35 DBBAB
36-40ADDDB; 41—45AACDA; 46—50BBAAB; 51—55CBAAA
56—60 DDDCC 61—65 DDCAD 66—70CDCDD 71—75 ABCCD
书面表达：
听力材料：
Text 1 w.w.w.k.s.5.u.c.o.m
M：The Golden Lion sounds like a good place to eat in.
W：OK.Let’s go there.I hear they have good service.
Text 2
M：Did you and Anna really meet at exactly five minutes to eight in front of the theatre?
W：No.To be exact，we got there two minutes earlier.
Text 3
M：If you’d like to go there for dinner this evening，I’ll phone the restaurant.
W：Thank you，but I promised my sister I’d take her to the airport.
Text 4
M：I suppose your second-hand TV set cost about$60.
W：Sixty? Actually it was double that price.
Text 5
M：Did you develop all your own film?
W：Only the black and white.I had a photo shop do my color pictures.
Text 6
M：Hello.
W：Is this Mr.Smith’s office?
M：Yes，it is.
W：Is he there?
M：I’m sorry，he isn’t.He’s at a meeting this morning.
W：What time will he be back?
M：He’11 be back after two o’clock but he’11 only be in the office for an hour.
W：Can I reach him in the conference room?
M：I’m sorry.but they aren’t taking any calls.Can I take message for you?
W：This is Anne Lucas in the accounts office.1 would like a word with him，please.
M：I can ask him to call you after the meeting.Can I have your number?
W：Yes，it’s 488—6361.He can reach me there until three o’clock.
Text 7
M：It’s a beautiful day，isn’t it?
W：Yes，nice and sunny.
M：It’s much better than last week.It was too warm then.
W：I’m glad summer is over.I like autumn best.
M：So do I.It’s neither too hot nor too cold.The sky is clear and blue.
W：It’s a good time to have a picnic.Do you want to have one this weekend?
M：I’d love to，but I think it’s going to rain.The weatherman said it will.
W：l don’t think he’s right.It hasn’t rained for a week.
M：But he is usually right in his weather news.
W：I’m sure we’11 have fine weather for our picnic.
Text 8
W：Pardon me，officer.1 want to go to Bums Park.Would you please tell me how to get there?
M：Yes，Miss.Bums Park is about half a mile from here.Do you want to take a bus or walk? The bus stop is on the other side of the street if you want to take a bus.
W：Well，I’d like to walk if it’s within walking distance.
M：All right.We are now on Main Street.Go this way along，until you come to First Street.
W：I see.
M：Go straight along Main Street as far as First Street.Turn left onto First Street and walk another two blocks.Then you’11 come to Lincoln Street.
W：Lincoln Street?
M：Yes，then turn right.Walk for a few minutes.Bums park begins at the comer of Lincoln and Fifth.
W：Thank you very much，officer.
M：You’re welcome.Good-bye.
Text 9
M：Good morning，madam.Is anybody taking care of you?
W：No，not yet.Could you show me that overcoat，the silver gray one in the middle?
M：Certainly.You’ve got excellent taste.It’s very nice and it’s 100 percent woo1.
W：I like it.Could I try it on?
M：Certainly.It looks good on you，madam.
W：I think so.But a slightly larger size would be better.
M：Would you like to try this one on?
W：This one fits me well.How much does it cost?
M：Only $170.
W：OK，I’II take it.And I’d like that blue jacket on the right.How much is it?
M：It’s just $ 250.
W：Oh，that’s too expensive，I’m afraid.
M：Anything else?
W：No，thanks.
Text 10
So，here we are.As I told you，the country schoolhouse was three miles from my uncle’s farm.You wouldn’t imagine that there would be a school in the woods，would you? The house held about 24 boys and girls at that time.We attended the school once or twice a week in summer.We walked there in the cool of the morning by the forest paths，and back late in the afternoon.All the pupils brought their dinners in baskets……corn cakes，milk，and other good things.We sat in the shade of the trees at noon and ate them.It’s the part of my education that I look back upon with the most satisfaction.You know how old 1 was when I came to this school for the first time? I was seven.I call still remember what happened that day.A fifteen-year-old girl stopped me at the gate and asked me if I “got used to tobacco” meaning…“did I smoke”.I said no.She made faces at me and made fun of me to the crowd，and said，“here is a girl seven years old who can’t smoke.’’
Look at the wall here.Do you see all these names “Lefty”，that’s me.I got the name when I was four.I used my left hand more often when I was young.Well，that was sixty years ago.