If it takes Kate twenty seconds to add 12 and 26, while Terry can do the sum in a quarter the time on his pocket calculator, how much better grades will Terry get than Kate in the maths exam?

Pocket calculators are as cheap to buy as a pair of shoes, and as essential to thousands of school children as a pencil and eraser. Schools have tried to limit their use, by allowing them in science lessons, to save time but by not allowing them to be used in maths classes. When children do their homework, a pocket calculator is a must. Nowadays in Britain, calculators can be used freely in school examinations, and already in many schools the only sound to be heard during a mathematics examination is the sound of children tapping out their answers.

Many parents feel that their children are not being given a basic understanding of the facts of maths. “The process of addition, division, subtraction and multiplication is part of a training in logic which is important for every child. It teaches them to take series of steps necessary in coming to a conclusion,” says a local maths teacher. “ With a calculator, the child can reach the right answer, but have no idea at all how he got there.” Another teacher in the same school disagreed. “Of course the children understand the principles(基本原理) behind what they do on the calculator. It makes no difference to the mental processes they go through, except to make them much faster, and less boring.” “It’s far easier to teach them to completely understand the idea of division and multiplication by making them understand which button they need to push than to talk about apples being cut in pieces,” said another teacher, who uses calculators to keep the interest of his class.

In any case, the pocket calculator is here to stay; it’s taking the stress out of mental labor in all sorts of ways.

1. From the passage we learn that ______________.

A. in Britain students are encouraged by schools to use pocket calculators

B. parents use the calculators to keep the interest of their children

C. people have different opinions on whether pocket calculators should be used in maths classes

D. all the teachers agree that pocket calculators should be used in classes but not in school examinations

2. As a local maths teacher says, children can reach the right answer with a calculator, but they ______________.

A. really don’t know how they can get better grades

B. have no idea how to use the calculator properly

C. can’t understand whether the answer is right

D. don’t know how they get it

3. Which of the following is NOT true?

A. Calculators used to be as cheap as a pair of shoes

B. Some schools don’t allow the students to use pocket calculators in maths class

C. How to add, divide, subtract and multiply is a question of maths

D. It’s easy to calculate with a calculator

4. The author stands for the opinion that ______________.

A. Students should be allowed to use pocket calculators freely

B. since the pocket calculator has been created, it should be made use of

C. pocket calculators shouldn’t be used by students in maths classes

D. Terry should get grades four times better than Kate

Directions: Read the following passage which is followed by several questions. Give an answer to each question as required.

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：2015屆福建省高一第一次月考英語試卷（解析版） 題型：閱讀理解

A car needs gas to run and your body also needs food to work for you. Eating the right kind of food is very important. It can help your body grow strong to take care of what you eat.

     There are four main food groups altogether. The dairy group has food like milk, cheese and sour milk. The other three groups are the meat and fish group, the fruit and vegetable group, and the bread and rice group. Each meal should have at least one food from all four main groups. With all these food together, you will be given enough energy during the day.

     It is easy to get into bad eating habits. You may eat your breakfast in a hurry to get to school on time. Or you may not have time for a good lunch. It may seem easy to finish your supper with fish and chips all the time. But you will find yourself tired in these days and you can not think quickly.

     Watching what you eat will help keep your body healthy and strong. It is also good to take some exercise. It will help you eat more if you take a walk or play games in the open air. Having a good eating habit with some exercise is the key to your health.

1.Which of the following diets do you think is the best one?

A. Eggs, tomatoes and chicken.  

B. Milk, bread, cabbages and beef.

C. Corn, fish, cream and pork.   

D. Rice, bean curd（豆腐）, apples, fish and chicken.

2.Which of the following is a good eating-habit?

A. Going to school without any breakfast

B. Eating fish and chips for supper all the time.

C. Eating your lunch in a very short time.

D. Having at least one food from all four groups in each meal.

3.The underlined word “dairy” in the second passage means _____________.

A. the food made out of cows such as milk and butter

B. the shop that sells milk and butter

C. a farm where cows are kept       

D. a place where milk products are made.

4.In this passage the writer mainly tells us that _____________.

A. enough energy helps people think more quickly

B. taking exercise can keep your body strong

C. every person needs food to grow well

D. right kind of food with exercise will keep you healthy

 

查看答案和解析>>

科目：高中英語 來源：2014屆山西省高一5月月考英語試卷（解析版） 題型：閱讀理解

There are two ways to save money traveling. The first way is to get the best deals on the specific things you want. There is a limitation to this type of approach (途徑，方法) though. If you find the lowest price on the best hotel in Honolulu at the height of the season, you will save money, but still have a very expensive vacation. Trying to get exactly what you want will generally be an expensive proposition, in travel and in life.

The other approach is to be a true opportunist. This will be difficult for some of you, and entirely unacceptable to others. Nonetheless (盡管如此)，the travelers who get to travel the most, go to the widest variety of places, learn the most and do the most, are the opportunists. This will be true until you are so wealthy that you have no monetary (貨幣的；錢的)limits.

The first time I went to Ecuador, I went there because it was cheap. If it wasn’t, I would have had a great time—somewhere else. The trip lasted a month, and cost $1045, which included airfare and even the $130 fee for a guide to take me to the top or glacier (冰川) covered Mount Chimborazo.

I cut the cost by taking a bus from my home in Michigan to Miami, and back again when I returned from Ecuador. The round-trip ticket cost $158. The round-trip flight to Quito from Miami was only $256, because it was a courier (信使，通訊員) flight, which meant I signed for some luggage(car parts), and  could only take carry-on luggage.

Never did I feel deprived, or bored. I had a great time, eating wherever it was cheap and clean, doing all sorts of inexpensive, but interesting things, and traveling across the country to climb Chimborazo. I also met and fell in love with my wife Ana.

Being an opportunist means you’ll have just as much variety, and probably almost everything you want—eventually. You just have to stop trying to get exactly what you want exactly when you want it. If the guide that took me up Chimborazo hadn’t dropped his price from $200 to $130, I would have spent $2 for a bus and gone hiking on EI Altar, another great Andean mountain. That would have left me with enough money for several other minor adventures.

1.The underlined phrase “the best deals” in the first paragraph probably refers to ______.

A．the best service

B． the lowest price

C．the cheapest goods

D． the best approaches

2.The return tickets from his hometown to Quito cost the author ______.

A．$128

B． $256

C． $207

D． $414

3.The last paragraph was to tell us how to ______.

A．save money for minor adventures

B．cut down traveling costs.

C．deal with different situations

D．become opportunist travelers

4.It’s suggested that the author _____.

A．went hiking on El Altar

B．traveled with his wife in Ecuador

C．is an opportunist traveler

D．likes traveling around the world

5.Which of the following can serve as the best title of the passage?

A．Cheap Travel Secrets

B． Travel Secrets

C．A Travel Opportunist

D． Travel Tips

 

查看答案和解析>>

科目：高中英語 來源：2014屆山東省高一下學(xué)期5月月考英語試卷（解析版） 題型：閱讀理解

 “In only six days I lost seven pounds of weight.”

“Two full inches in the first three days!”

These are the kinds of statements used in magazine, newspaper, radio and television ads, promising new shapes and new looks to those who buy the medicine or the device (設(shè)備；裝置). The promoters (推銷員；促銷員) of products say they can shape the legs, slim the face, smooth wrinkles, or in some other way to beauty or desirability.  

Often such products are nothing more than money--making things for their promoter. The results they produce are questionable, and some are dangerous to health.  

To understand how these products can be legally promoted to the public, it is necessary to understand something of the laws covering their regulation (條例). If the product is a drug, FDA（Food Drug Administration） can require proof （證明）under the Food, Drug, and Cosmetic Act that is safe and effective before it is put on the market . But if the product is a device, FDA. has no author to require premarketing proof of safety or effectiveness. If a product already on the marker is a danger to health, FDA can request the producer or distributor to remove it from the market voluntarily, or it can take legal action , including seizure （查封） of the product.  

One notable case a few years ago involved an electrical device called the Relaxacisor, which had been sold for reducing the waistline. The Relaxacisor produced electrical shocks to the body through contact pads. FDA took legal action against the distributor to stop the sale of the device  on the grounds that it was dangerous to health and life.  

Obviously, most of the devices on the market have never been the subject of court proceedings（法律訴訟）,and new devices appear continually. Before buying, it is up to the consumer to judge the safety or effectiveness of such items.  

1.It can be inferred that ads mentioned in the text are ______.  

A．objective

B．costly

C．unreliable (不可靠的 )

D．illegal

2.Which of the following is true according to the text?

A. The court is in charge of removing dangerous product.  

B. New products are more likely to be questionable.  

C. The production of a device must be approved by FDA.  

D. The promoters usually just care about profits.  

3. FDA can ask for the proof of safety and effectiveness of a product ________.  

A．if it is a drug

B．if it is a device

C．if its consumers make complaints

D．if its distributors challenge FDA’s authority

4.The Relaxacisor is mentioned as_______.  

A．a(chǎn) product which was designed to produce electricity

B．a(chǎn) product whose distributor (批發(fā)商；批發(fā)公司) was involved in a legal case

C．a(chǎn) successful advertisement of a beauty product

D．a(chǎn)n example of a quality beauty product

5.The author intends to __________

A. make consumers aware of the promoters’ false promises

B. show the weakness of the law on product safety

C. give advice on how to keep young and beautiful

D. introduce the organization of FDA. 

 

查看答案和解析>>

科目：高中英語 來源：江西省名校2010屆高考信息試卷英語（三） 題型：閱讀理解

Farmers use different kinds of soil conservation methods to protect their land from damage by farming and the forces of nature . One important form of soil conservation is the use of windbreaks . Windbreaks are barriers formed by trees and other plants with many leaves . Farmers plant them in lines around their fields .

Windbreaks stop the wind from blowing soil away . They also keep the wind from destroying or damaging crops . They are very important for growing grains , such as wheat . There have been studies done on windbreaks in parts of West Africa , for example . These found that grain harvests can be twenty percent higher in fields protected by windbreaks compared to fields without such protection .

However , windbreaks seem to work best when they allow a little wind to pass through . If the wall of trees and plants stops wind completely , then violent air motions will take place close to the ground . These motions will lift soil into the air where it will be blown away .

For this reason , a windbreaks is best if it has only sixty to eighty percent of the trees and plants needed to make a solid line . An easy role to remember is that windbreaks can protect areas up to ten times the height of the tallest trees in the windbreaks .

These should be at least two lines in each windbreak . One line should be large trees . The second line , right next to it , can be shorter trees and other plants with leaves . Locally grown trees and plants are best for windbreaks .

1.What is the best title for the passage?

A.Building a windbreak to protect soil

B.Building a windbreak to protect crops

C.Using a windbreak to improve grains

D.Using a windbreak to improve plants

2.In the fifth paragraph the author tells us windbreaks______.

A.do not work at all

B.do not stop wind fully

C.will not take place

D.will not allow wind to pass through

3.According to the passage , which of the following statement is wrong ?

A.Windbreaks are barriers .

B.Windbreaks can be used to make fences .

C.In general , there are two lines in all in every windbreak .

D.Windbreaks can protect areas .

 

查看答案和解析>>

科目：高中英語 來源：四川省2009-2010學(xué)年高一下學(xué)期期中考試試題（英語） 題型：閱讀理解

 

Everybody hates rats. But in the earthquake capitals of the world – Japan, Los Angeles, Turkey – rats will soon be man’s new best friends.

What happens after an earthquake? We send in rescue dogs. Why? Because they can smell people. Dogs save lives. They help rescuers to find living people. But dogs are big and they can’t get into small spaces. So now a new research project is using a smaller animal to save lives: the rat.

How does it work? First , the rat is trained to smell people. When this happens, the rat’s brain gives a signal（信號）.This is sent to a small radio on its back, and then the rescuers follow the radio signals. When rat’s brain activity jumps, the rescuers know that someone is alive. The rat has smelled that person.

Although there are already robots which can do this job, rats are better. Christian Linster at Cornell University, New York, says, “Robots’ noses don’t work well when there are other smells around. Rats are good at that. ” Rats can also see in the dark. They are cheaper and quicker to train than dogs, and unlike robots, they don’t need electricity!

The “rat project” is not finished, but Julie Ryan of International Rescue Corps in Scotland says, “It would be fantastic. A rat could get into spaces we couldn’t get to, and a rat would get out if it wasn’t safe.” Perhaps for the first time in history, people will be happy to see a rat in a building（but only after an earthquake, of course.）

1．In the world earthquake capitals, rats will bee man’s best friends because they can          .

         A．take the place of man’s rescue jobs

         B．find the position of people alive who are trapped in buildings

         C．serve as food for people alive who are trapped in buildings

D．get into small spaces

2．From the third paragraph we know the rescuers can judge a person is alive by          .

         A．the noise made by the rat

B．the rat’s unusual behaviour

         C．the signal sent by the radio on the rat’s back

D．the smell given off by the person

3．In doing rescue jobs,         .

        A．rats smell better than dogs

         B．dogs don’t need to be trained to smell people

         C．robots’ sense of smell can be affected by other smells around  

         D．rats can see in the dark and smaller than robots

4．Rats have all the following advantages except that         .

         A．they are more fantastic than other animals

         B．they are less expensive to train than dogs

         C．they don’t need electricity  

         D．they are small and can get into small places

5．After reading the passage we can know         .

         A．a(chǎn)t present rats have taken the place of dogs in searching for people

         B．the “rat project” has been finished

         C．people are now happy to see a rat in a building

         D．now people still use dogs and robots in saving people

 

查看答案和解析>>

同步練習(xí)冊答案