题目
题型:不详难度:来源:
However, Ed has to guard against Florida’s changeable winter weather. In January and February, temperatures can destroy Ed’s entire orange crop. Having farmed in Florida for the past 35 years, Ed is prepared for the frost(霜). When temperatures drop below freezing, Ed tries to save his crop by watering his orange trees. The water freezes and forms a thin layer(层) of ice around the trees. Strange as it may sound, this thin layer of ice actually keeps the fruit warm.
What happens is simple. When the trees are watered, the water loses heat and becomes ice. The warmth of the heat it loses is taken in by the fruit and keeps its temperature at a safe level. Ed has effectively used this method to save many orange crops.
But Ed still faces difficulties. The trees must be watered at the exact moment the temperature drops to the freezing point. Also, just the right quantity(数量)of water must be used. Too much water can form a thicker layer of ice that will break the tree’s branches(树枝). Another difficulty is that wind blows away the heat, so Ed has to worry about not only when but also how often his trees should be watered, and how much water should be used.
Computer technology may help Ed with some of these worries. With equipment(设备), air and soil temperatures and wind speed can be measured. The information is fed into a computer which can calculate(计算) when the temperature will drop below freezing. The computer can correctly decide the quantity of water to be used and how frequently( ) the trees should be watered. Ed finds looking after his orange trees a lot easier with the help of a computer, and, his customers will have the benefits(利益) of computer—age oranges.
小题1:The passage is mainly about______.
A.a farmer expert cares for his orange trees |
B.the different uses of computers |
C.growing oranges in Florida’s changeable weather |
D.different ways of frost protection |
A.using a wind machine to drive away the cold air |
B.equipping his orange trees with a computer |
C.watering it at the proper time |
D.picking his fruit at the first sign of frost |
A.removes the need for frost protection |
B.prevents temperature from dropping |
C.tells farmers why outdoor temperatures change |
D.helps the farmer get a better harvest |
答案
小题1:A
小题1:C
小题1:D
解析
小题1:根据Farmer Ed Rawlings smiles as he looks at his orange trees.及下文描述可知选A。
小题1:根据When temperatures drop below freezing, Ed tries to save his crop by watering his orange trees.描述可知选C。
小题1:根据Computer technology may help Ed with some of these worries. 及下文描述可知选D。
核心考点
试题【Farmer Ed Rawlings smiles as he looks at his orange trees. The young oranges are】;主要考察你对日常生活类等知识点的理解。[详细]
举一反三
We’re going by train to New York, and then take a ship to Europe . When we arrive in Europe, we’re going to some countries for sightseeing (观光). We’ll go to places either by train or by bus. We’re going to fly home.
It took us a long time to decide where to go, but I think we’ll have a very interesting trip. We’ll go to England, France and Italy. We also talked about how we would go to Europe. At first we wanted to fly because it would be faster and would save more time. But my brother likes to take a boat trip and the children like that, too.
( ) 1. How many people will go to have a trip?
A. Three B. Four C. Five D. Six
( ) 2. My father will not go on the trip because .
A . he doesn’t like travels B. he like staying at home
C. he is too old to travel D. nobody wants to take him along
( ) 3 . We’re coming back home by .
A. sea B. air C. bus D. train
( ) 4. In Europe we will .
A. go sight-seeing at the seaside B. to go to different countries by ship
C. buy a lot of presents D. go from place to place by train or by bus
( ) 5. My brother and my children would like to .
A. do some shopping in Europe B. study the Italian language in Italy
C. enjoy a trip by ship D. learn French in France
小题1:—What colour is the sky today?—It’s____________.
A.white | B.yellow | C.black | D.blue |
A.Fourteen | B.Six | C.Eleven | D.Five |
A. The monkeys. B. The pandas and the foxes
B. The elephants and the cats. D. The horses and the pandas
小题4:There’re __________ at the sports meeting.
A.not any birds | B.a lot of animals | C.many people | D.many monkeys |
A.A tiger, a baby horse and some cats | B.Polly, an elephant and some small fish |
C.A fox, a baby panda and some animals | D.A monkey, a baby cat and some birds |
Sandstorms are bad for people’s health. If people breathe in too much sand, they will cough or have serious illnesses. Sandstorms also give farmers lots of problems. Sometimes their sheep get lost in the storms and never come back home. The winds also tear the farmers’ houses down.
What can you do to stop sandstorms? Here’s a piece of advice. Ask your parents to help you plant some trees this spring. If you see people cutting down too many trees, tell them about the dangers of sandstorms, and ask your government to stop them.
小题1:When do sandstorms usually happen?
A.In summer. | B.In spring. | C.In winter. | D.In autumn |
肥沃的 B.贫瘠的 C.疏松的 D.大量的
小题3:The second paragraph tells us ______________.
A.why sandstorms happen in northern China |
B.the dangers of sandstorms |
C.sandstorms aren’t terrible at all |
D.how sandstorms happen |
A.Plant more trees in spring. |
B.Stop people to cut down too many trees |
C.Don’t stay outside when sandstorms happen. |
D.Tell people about the dangers of sandstorms. |
A.Sandstorms |
B.How we can stop sandstorms |
C.Why sandstorms only happen in northern China. |
D.Sandstorms can influence most of China. |
Escaping a fire is a serious matter. Knowing what to do during a fire can save your life. It is important to know the ways you can use and show them to everyone in the family, such as stairways and fire escapes, but not lifts.
From the lower floors of the buildings, escaping through windows is possible, learn the best way of leaving by windows with the least chance of serious injury.
The second floor window is usually not very high from the ground. An average (平均高度的) person, hanging by the finger-tips will have a drop of about six feet to the ground. It is about the height of an average man. Of course, it is safer to jump a short way than to stay in a burning building.
Windows are also useful when you are waiting for help. Be sure to keep the door closed. Or smoke and fire may be drawn into the room. Keep your head low at the window to be sure you get fresh air rather than smoke that may have leaked (渗) into the room.
On a second or third floor, the best windows for escape are these which open onto a roof. From the roof a person can drop to the ground more safely. Dropping onto cement (水泥) might end with injury. Bushes and grass can help to break a fall.
小题1:It is more important to ________.
A.put out the fire in the burning house | B.Know the ways to escape the fire |
C.jump off a burning house | D.keep the door closed |
A.if you have a long rope | B.if you are strong enough |
C.if you live on a lower floor | D.if there are some bushes on the ground |
A.You can escape through stairways. |
B.You can choose fire escapes. |
C.Escape from the windows which open onto a roof. |
D.Use a lift to come down at once. |
A.you can get fresh air | B.you can call for help |
C.you can easily jump off | D.you can be seen first |
A.Escaping from the Windows | B.Save Yourself in the Burning House |
C.Knowledge on Fire | D.Waiting for Help |
Old styles are fashionable again, so one way is to buy second-hand clothes — recycled clothes. Another way is to buy’ fair trade clothes. These clothes are either recycled or made in a ’ way that protects the environment. They also protect the people who make the clothes.
Surprisingly, white cotton is one of the least environmentally-friendly crops of all. To protect the cotton, the growers use chemicals that pollute water, make farm workers ill and kill wildlife. New materials, such as hemp and bamboo, grow quickly and are more environmentally-friendly. These materials are very soft, and look fantastic. The best materials are coloured using natural dyes, made from plants.
Environmentally-friendly clothes are practical but until now they were often dull. Now fashion-designers are working with these materials and the clothes are beautiful as well. So now we can buy fashionable clothes that are also environmentally-friendly.
小题1:Why do people often buy things they don’t need? Because_.
A.new things can be more comfortable |
B.everyone wants to be fashionable |
C.people are richer than before now |
D.people care about the environment |
A.Recycled fashion. | B.The problem with fashion. |
C.Fashion doesn’t have to pollute. | D.New materials. |
A.Materials soft and looking fantastic. |
B.Any materials coloured using natural dyes. |
C.Hemp and bamboo. |
D.White cotton. |
A.people pay more attention to our environment |
B.environmentally-friendly clothes are practical |
C.all old styles become fashionable again |
D.fashion-designers are working to make them beautiful |
A.Cotton or Hemp and Bamboo? |
B.Environmentally-friendly Clothes |
C.Old Style, New Fashion Again |
D.Fashion and the Environment |
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