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I’m amazed to hear from my school teacher again. ,it is ten years since we met last.
A.In a word B.What’s more
C.That’s to say D.Believe it or not
查看习题详情和答案>>Sports can help you keep fit and get in touch with nature. However, whether you are on the mountains, in the waves, or on the grassland, you should be aware that your sport of choice might have great influence on the environment.
Some sports are resource-hungry. Golf, as you may know, eats up not only large areas of countryside, but also tons of water. Besides, all sorts of chemicals and huge amounts of energy are used to keep its courses(球场) in good condition. This causes major environmental effects. For example, in the dry regions of Portugal and Spain, golf is often held responsible for serious water shortage in some local areas.
There are many environment-friendly sports. Power walking is one of them that you could take up today. You don’t need any special equipment except a good pair of shoes; and you don’t have to worry about resources and your purse. Simple and free, power walking can also keep you fit. If you walk regularly, it will be good for your heart and bones. Experts say that 20 minutes of power walking daily can make you feel less anxious, sleep well and have better weight control.
Whatever sport you take up, you can make it greener by using environment-friendly equipment and buying products made from recycled materials. But the final goal should be “green gyms”. They are better replacements for traditional health clubs and modern sports centers. Members of green gyms play sports outdoors, in the countryside or other open spaces. There is no special requirement for you to start your membership. And best of all, it’s free.
Which of the following is the author most probably in favor of?
A. Cycling around a lake. B. Motor racing in the desert.
C. Playing basketball in a gym. D. Swimming in a sports center.
What do we know about golf from the passage?
A. It is popular in Portugal and Spain.
B. It causes water shortages in some areas.
C. It pollutes the earth with chemicals and wastes.
D. It needs water and electricity to keep its courses green.
The author writes the passage to_______.
A. show us the function of major sports
B. introduce different types of environment-friendly sports
C. discuss the major influence of popular sports
D. encourage us to go in for green sports
查看习题详情和答案>>Without proper planning, tourism can cause problems. For example, too many tourists can crowd public places that are also enjoyed by the inhabitants of a country. If tourists create too much traffic, the inhabitants become annoyed and unhappy. They begin to dislike tourists and to treat them impolitely. They forget how much tourism can help the country’s economy. It is important to think about the people of a destination country and how tourism affects them. Tourism should help a country, keep the customs and beauty that attract tourists. Tourism should also advance the wealth and happiness of local inhabitants.
Too much tourism can be a problem. If tourism grows too quickly, people must leave other jobs to work in the tourism industry. This means that other parts of the country’s economy can suffer.
On the other hand, if there is not enough tourism, people can lose jobs. Businesses can also lose money. It costs a great deal of money to build large hotels, airports, air terminals, first- class roads, and other support facilities(配套设施)needed by tourist attractions. For example, a major international class tourism hotel can cost as much as 50 thousand dollars per room to build. If this room is not used most of the time, the owners of the hotel lose money.
Building a hotel is just a beginning. There must be many support facilities as well, including roads to get to the hotel, electricity, sewers to handle waste, and water. All of these support facilities cost money. If they are not used because there are not enough tourists , jobs and money are lost.
Which of the following do you think has been discussed in the part before this selection?
A. It is extremely important to develop tourism.
B. Building roads and hotels is essential.
C. Support facilities are highly necessary.
D. Planning is of great importance to tourism.
The underlined word“ inhabitants” (in Paragraph 1 ) probably means________.
A. tourists B. passengers
C. population D. citizens
Too much tourism can cause all these problems EXCEPT ________ .
A. a bad effect on other industries
B. a change of tourists’ customs
C. over - crowdedness of places of interest
D. pressure on traffic
It can be inferred from the text that ________ .
A. the author doesn’t like tourism developing so fast
B. local people will benefit from tourist attraction
C. other parts of a country’s economy won’t benefit from tourism much
D. we can't build too many support facilities
查看习题详情和答案>>Life on land probably began about 430 million years ago, though it has existed in the water for perhaps as much as 3,000 million years. When we think of the first thing on land, we probably think of strange animals coming out of the oceans, but in fact no animals could have been living if plants had not been on land first. Plants had to be on land before animals arrived. They supplied the first land animals with the surrounding and food necessity, since they, the plants, are the only form of life that is able to get and store energy.
The first plants to exist out of the water were probably certain kinds of algae(海藻)which were followed by other plants that grew close to the ground and needed water in which to reproduce. Once the move to land had been made, however, evolution(进化)took place quickly. By the end of 100 million years, plants had developed their roots(根),and some had got tree-like forms since height was very important in gaining sunlight. About 300 million years ago, much of the world was covered with forests of huge trees. In most ways they were like modern trees. They had roots, leaves, wood, but mostly they had not developed seeds.
The main idea of the first paragraph is ________.
A. life on land probably began 430 years ago
B. the first animal on land came from oceans
C. there wouldn't be animals without plants
D. plants are the only form of life that is able to get and store energy
Which of the following statements is true according to the passage?
A. Algae has existed for more than 430 million years.
B. It is impossible that algae might be the earliest plant on land.
C. Plants get food from animals in the oceans.
D. Evolution began after animals appeared on land.
Plants with roots appeared about ________ million years ago.
A. 430 B. 300 C. 330 D. 100
According to the passage, ________ appeared earlier than ________.
A. apples; oranges B. oranges; apples
C. oranges; roses D. algae; wheat
查看习题详情和答案>>Want a glance of the future of health care? Take a look at the way the various networks of people about patient care are being connected to one another, and how this new connectivity is being exploited to deliver medicine to the patient - no matter where he or she may be.
Online doctors offering advice based on norman symptoms(症状)are the most obvious example. Increasingly, however, remote diagnosis(远程诊断)will be based on real physiological data(生理数据)from the actual patient. A group from the University of Kentucky has shown that by using personal data assistance plus a mobile phone ,it is perfectly practical to send a patient’s important signs over the telephone. With this kind of equipement, the cry asking whether there was a doctor in the house could well be a thing of the past.
Other medical technology groups are working on applying telemedicine to rural (countryside) care. And at least one team wants to use telemedicine as a tool for disaster need - especially after earthquakes. On the whole, the trend is towards providing global access to medical data and experts’ opinions.
But there is one problem. Bandwidth(宽带) is the limiting factor for sending complex (复 杂 )medical pictures around the world,—CU photos being one of the biggest bandwidth users. Communication satellites say be able to deal with the short - term needs during disasters such as earthquakes or wars. But medicine is looking towards both the second - generation Internet and third generation mobile phones for the future of remote medical service.
Doctors have met to discuss computer - based tools for medical diagnosis, training and telemedicine. With the falling price of broadband communications, the new technologies should start a new time when telemedicine and the sharing of medical information, experts’opinions and diagnosis are common.
The writer chiefly talks about ________ .
A. the use of telemedicine
B. the on -lined doctors
C. medical care and treatment
D. communication improvement
Which of the following statements is true according to the text?
A. Patients don’t need doctors in hospitals any more.
B. It is impossible to send a patient’s signs over the telephone.
C. Many teams use telemedicine dealing with disasters now.
D. Broadband communications will become cheaper in the future.
The“problem”in the fourth paragraph refers to the fact that ________ .
A. bandwidth isn’t big enough to send complex medical pictures
B. the second - generation of Internet has not become popular yet
C. communication satellites can only deal with short - term needs
D. there is not enough equipment for spreading the medical care
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