-- How do you like these chairs?
-- Yes, they are actually nice but they are not much ______ demand now.
A. in
B. on
C. at
D. for
Muscles are stringly bundles of fibers varying from one five - thousand of an inch to about three inches. They have three unique characteristics, they can become shorter and thicker; they can stretch; and they can retract to their original positions. Under a high -powered microscope, muscle tissue is seen as long, slender cells with a grainy texture like wood.
More than half of a person' s body is composed of muscle fibers, most of which are involuntary, in other words, work without conscious direction. The voluntary muscles, those that we move consciously to perform. particular actions, number more than five hundred. Women have only 60 to 70 percent as much muscle as men for their body mass. That is why an average woman can' t lift as much, throw as far, or hit as hard as an average man.
According to the selection, the muscular sense is responsible for ______ .
A.the efficiency of our muscles
B.the normal breathing function
C.directing our muscles intelligently
D.the work of only our involuntary muscles
Another thing that makes money exchanges more complicated is tipping. The Chinese people have happily put an end to tipping, but Westerners are still plagued with this indignity. Waiters and waitresses, cab drivers, hotel bellboys, barbers and hairdressers and all sorts of other people must be tipped. Their employers give them low wages because it is expected that you, the customer, will make up the difference. If you don' t, the service person can' t earn a living. Tipping also varies from place to place, generally in the area of 15% of your bill (before taxes), but again you should ask local residents whom to tip and how much.
There is another kind of tipping as well. You are generally expected to give something (either cash or a bottle of whisky) to the mailman and to your building "super" at Christmas time. You should discuss this also with neighbors and colleagues.
The main idea of this passage is ______.
A.shopping and tipping
B.sales and shopping
C.sales taxes and tipping
D.sales taxes and people
A.where
B.when
C.that
D.why
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
Defeats are nothing to be afraid of. They are common incidents in the life of every man who achieves success. But defeat is a dead loss unless you do face it, analyze it and learn why you failed. Defeat, in other words, can help to get rid of its own cause. Not only does defeat prepare us for success but nothing can cause within us such a strong wish to succeed. If you left a baby grasp a stick and try to pull it away, he will hold it more and moro tightly until his whole weight is hung up. It is this same reaction that should give you new and greater strength every time you are defeated. If you make full use of the power which defeat gives; you can compete with it far more than you are able to.
How much does the writer know about success?
A.He knows at least several examples of success.
B.He knows every success in life.
C.He knows every success that has been achieved by man.
D.It is not referred to.
Americans eat ______ as they actually need every day.
A.twice as much protein
B.twice protein as much twice
C.twice protein as much
D.protein as twice much
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
Americans eat______as they actually need every day.
A.twice as much protein
B.twice protein as much
C.twice protein as much
D.protein as twice much
A.cultivated
B.licensed
C.motivated
D.innovated