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[单选题]
Most people travel for vacations,but some people travel to（）and discover new places.
A.explore
B.introduce
C.continue
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题目内容
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A.explore
B.introduce
C.continue
如果结果不匹配，请 联系老师 获取答案
更多“Most people travel for vacatio…”相关的问题
A．He had a broad vision of his country's future.
B．He put the interests of Virginia ahead of those of the Union.
C．He ignored the advice of people who settled the western region.
D．He was one of the first government officials to travel in the western United States.
Most people who travel long distances complain of jetlag (喷气飞行时差反应). Jetlag makes business travelers less productive and more prone 【21】______ making mistakes. It is actually caused by 【22】______ of your “body clock” a small cluster of brain cells that controls the timing of biological 【23】______ The body clock is designed for a 【24】______ rhythm of daylight and darkness, so that is thrown out of balance when it 【25】______ daylight and darkness at the “wrong times in a new time zone. The 【26】______ of jetlag often persist for days 【27】______ the internal body clock slowly adjusts to the new time zone. Now a new antijetlag system is 【28】______ that is based on proven 【29】______ pioneering scientific research. Dr. martin Moore-Ede has 【30】______ a practical strategy to adjust the body clock much sooner to the new time zone 【31】______ controlled exposure to bright light. The time zone shift is easy to accomplish and eliminates 【32】______ of the discomfort of jetlag.
A successful time zone shift depends on knowing the exact times to either 【33】______ or avoid brightlight. Exposure to light at the wrong time can actually make jetlag worse. The proper schedule 【34】______ light exposure depends a great deal on 【35】______ travel plans.
Data on a specific flight itinerary(施行路线) and the individual's sleep 【36】______ are used to produce a Trip Guide with 【37】______ on exactly when to be exposed to bright light.
When the Trip Guide calls 【38】______ bright light you should spend time outdoors if possible. If it is dark outside, or the weather is bad, 【39】______ you are on an aeroplane, you can use a special light device to provide the necessary light 【40】______ for a range of activities such as reading, watching TV or working.
【21】
A．for
B．from
C．to
D．of
In a great many cities, hundreds of people ride bicycles to work every day. In New York City, some bike riders have even formed a group called Bike for a Better City. They claim that if more people rode bi- cycles to work there would be fewer automobiles in the downtown section of the city and therefore less dirty air from car engines.
For several years this group has been trying to get the city government to help bike riders. For example, they want the city to draw bicycle lanes on some of the main streets, because when bike riders must use the same lanes as cars, there are accidents. Bike for a Better City feels that if there were special lanes more people would use bikes.
But no bicycle lanes have been drawn. Not everyone thinks it is agood idea--they say it will slow traffic. Some store owners on the main streets say that if there is less traffic, they will have less business. And most people live too far from downtown to travel by bike.
The city government has not yet decided what to do. It wants to keep everyone happy. Only on week- ends, Central Park is closed to cars, and the roads may be used by bicycles only, but Bike for a Better City says that this is not enough and keeps fighting to get bicycle lanes downtown.
According to the passage, bicycles ______.
A．are more convenient than cars
B．are safer traffic tools than cars
C．are ridden by most people in U．S．
D．are the solution to some city problems
Most of us have also had trips that we would (14) to forget. Many conditions Can produce a bad traveling experience. For example，if the four conditions listed above do not exist，we will probably have a bad experience， (15) at best a difficult (16) . Students who travel to a foreign country to study often have a difficult trip. They usually travel alone. They don't know the language of the new country (17) . They often arrive in the new country (18) a huge international airport. From the airport，they need to find their way to their school. Maybe they need to change airplanes，to take a bus，a train，or a taxi. They need to do all this in a country (19) everything is unfamiliar. Later，after the experiences are over，they Can laugh. But at the (20) ，they feel terrible.
A. include
B. conclude
C. hold
D. contain
In the early 1800s the world【23】to change. There was little unknown land left in the world. People did not have to explore much any more. They began to work instead to make life belier.
In the second half of the 19th century many great inventions were made. Among them were the camera, the electric light and the radio. These all became a big part【24】our life today.
The first part of the 20th century saw more great inventions: the helicopter in 1909, movies with sound in 1926, the computer in 1928, and jet planes in 1930. This was also a time【25】a new material was first made. Nylon came out in 1935. It changed the kind of clothes people wore.
The middle part of the 20th century brought new ways to help people【26】disease. They worked very well. They made people healthier and let them live【27】lives. By the 1960's most people could expect to live to be at least 60.
By this time most people had a very good life.' Of course new inventions continued to be made. Man began【28】ways to go into space. Russia made the first step. Then the United States took a step. Since then other countries, including China and Japan, have made their steps into space.
In 1969 man took his biggest step away from earth. Americans first walked on the moon. This is certainly just a【29】though. New inventions will someday allow us to do things we have never yet【30】.
(56)
A．discoveries
B．creations
C．invention
D．inventions
Traveling can be fun and easy. A vacation trip to another country is especially 【21】______ when the traveling conditions are good. Good traveling conditions 【22】______ a comfortable mode of transportation, knowledge of the 【23】______ language, familiarity 【24】______ the custom and habits of the people in the country, and pleasant traveling 【25】______ . All of us have had nice trips 【26】______ this.
Most of us have also had trips that we would 【27】______ to forget. Many conditions can produce a bad 【28】______ experience. For example, if the four conditions 【29】______ above do not exist, we will probably have a bad experience, 【30】______ at best difficult 【31】______ . Students who travel to a 【32】______ country to study often have a difficult trip. They usually travel 【33】______ . They don't know the language of the new country 【34】______ . They often arrive in the new country 【35】______ a judge international airport. From the airport, they need to 【36】______ their way to their school. Maybe they need to 【37】______ airplanes, to take a bus, a train, or a taxi. They need to do ail this in a country 【38】______ everything is unfamiliar. Later, after the experience is 【39】______ , they can laugh. But at the 【40】______ , they feel terrible.
【21】
A．happy
B．enjoyable
C．amusing
D．favorable
Passage One
Questions 21 to 25 are based on the following passage.
Your passport is your official identification as an American citizen. In America，most people never consider obtaining a passport unless they are planning a trip out of the country. In Europe, where travel from one country to another is much more common，almost everyone carries a passport. A passport is final proof of identity in almost every country in the world.
In 1979 almost 15 million Americans held passports. Most of these passports were obtained to travel outside the country because，except for a few Western nations。passports are required to enter every country. And if you travel abroad，you must have a valid passport to reenter the country.
When traveling abroad，you will need a passport for identification when exchanging dollars for francs or marks or other foreign currency. You may also need your passport to use a credit card，buy an airplane ticket or check into a hotel. As a passport is an official U. S. document. it is valuable as identification in any emergency cases，such as floods，fires，or war.
Don't confuse passports and visas. Whereas a passport is issued by a country to its citizens. a visa is official permission to visit a country granted by the government of that country. For some years，many countries were dropping their visa requirements，but that trend has reversed. Argentina，Brazil，and Venezuela now require visas from U. S. citizens. They may be obtained from the embassy of the country you wish to visit.
Passport applications are available at passport agency offices in large cities like Boston，New York，or Chicago. In smaller cities，applications are available at post offices and at federal courts. To get your first passport，you must submit the application in person. along with a birth certificate and two pictures.
The main purpose of this passage is to______.
A. discuss traveling in other countries
B. distinguish between passports and visas
C. discuss the financial uses of a passport
D. provide information about passports
No Jetlag(时差反应)Anymore
Most people who travel long distances complain of jetlag(时差反应)． Jetlag makes business travelers less productive(多产的,有成效的)and more prone 1 making mistakes． It is actually caused by 2 of your "body clock"--a small cluster(串,组,群)of brain cells that controls the timing of biological 3 ． The body clock is designed for a regular rhythm(节奏)of daylight and darkness, so that it is thrown out of balance when it experiences daylight and darkness at the "wrong" times in a new time zone． The 4 of jetlag often persist(持续) for days 5 the internal body clock slowly adjusts to the new time zone．
Now a new anti-jetlag system is available that is based on proven 6 pioneering scientific research． Dr． Martin Moore has devised a practical strategy to adjust the body clock much sooner to the new time zone 7 controlled exposure to bright light． The time zone shift(转)is easy to accomplish and eliminates(消除) 8 of the discomfort of jetlag．
A successful time z0ne shift depends on knowing the exact times to either 9 or avoid bright light． Exposure to light at the wrong time can actually make jetlag worse． The proper schedule 10 light exposure depends a great deal on 11 travel plans．
Data on a specific flight itinerary(旅行路线)and the individual's sleep 12 are used to produce a Trip Guide with 13 on exactly when to be exposed to bright light．
When the Trip Guide calls 14 bright light you should spend time outdoors if possible． If it is dark outside, or the weather is bad, 15 you are on an aeroplane, you can use a special light device to provide the necessary light stimulus(刺激)for a range of activities such as reading, watching TV or working．
第 51 题
A．for
B．from
C．to
D．of
A.way
B.answer
C.help
D.means
Rivers are one of our most important natural resources (资源). Many of the world&39;s great cities are located(坐落) on rivers, and almost every country has at least one river running through it that plays an important role in the lives of its people.
Since the beginning of the history, people have used rivers for transportation(运输). The longest one in the United States is the Mississippi. The lifeline of Egypt is the Nile. To the people of India, the Gangs is great, but it is also important for transportation; Ships can travel along it for a thousand miles. Other great rivers are the Congo in Africa and the Mekong in southeast Asia. The greatest of all for navigation (航海), however, is the Amazon in Brazil. It is so wide and so deep that large ships can go about two thousand miles upon it.
Besides transportation, rivers give food, water to drink, water for crops(庄稼), and chances for fun and entertainment for the people who live along their banks. In order to increase(增加) the supply of crops, engineers sometimes build a dam (大坝) across a river and let a lake from behind the dam. Then people can use the water not only to irrigate (灌溉) their fields but also to make electricity for their homes and industries.
However, large cities and industries that are located upon rivers often make problems. As the cities grow in size and industries increase in number, the water in the rivers becomes polluted with chemicals(化学物质) and other materials. People are learning the importance, however, of doing more to keep their rivers clean if they want to enjoy the benefits (利益) of this natural resource.
The greatest river for navigation is ___________.
A.the Amazon
B.the Nile
C.the Mekong
D.the Mississippi
From a dam, people can use the water for ___________.A.keeping the rivers clean
B.only making electricity
C.washing clothes
D.irrigation and making electricity
The water in the river is polluted because of _____________.A.people's drinking water too much
B.people's swimming in the river too much
C.chemicals and other materials
D.people's building a dam across a river
The best title of the passage is ___________.A.Rivers in Cities
B.The importance of Rivers
C.Transportation
D.Natural Resources
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