题目内容
（请给出正确答案）
One can type better if he is relaxed because______.
A．his muscles and nerves have learned to do the job well
B．this skill requires concentration on the details while typing
C．man was born with this kind of skills inbuilt
D．he can better exercise his authority over the fingers
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更多“One can type better if he is r…”相关的问题
The author feels that a comparison of liquid and solid-fuel rockets shows that ______.
A．neither type is very economical
B．the liquid-fuel rocket is best
C．each type has certain advantages
D．the solid-fuel rocket is hest
Your overall margins on the top, left, and right sides of the page will look better if they are at least one inch. A minimum margin of about one and a half inches is good for the bottom. Your listing of the items looks best by rows(or columns) if the items are short and can be set up with two separate rows, one on the left and one on the right side of the page. Longer items of information are more suitably set up in lines extending across the page. In any event, you should do well to avoid long and narrow columns of data with large sections of wasted space showing on either side. Likewise, any arrangement that gives a heavy crowded effect does not please readers' eyes. Extra spacing between subdivisions are especially effective in pleasing readers' eyes.
What does this passage mainly describe？
How to ______．
听力原文： The great advance in rocket theory 40 years ago showed that liquid-fuel rockets were far superior in every respect to the skyrocket with its weak solid fuel, the only kind of rocket then known. However, during the last decade, large solid-fuel rockets with solid fuels about as powerful as liquid fuels have made their appearance, and it is a favorite layman's question to inquire which one is "better". The question is meaningless; one might as well as ask whether a gasoline or a diesel engine is "better". It all depends on the purpose. A liquid-fuel rocket is complicated, but has the advantage that it can be controlled beautifully. The burning of the rocket engine can be stopped completely; it can be reignited when desired. A solid-fuel rocket, on the other hand, is rather simple in construction, though hard, to build when a really large size is desired. But once you have a solid-fuel rocket, it is ready for action at a very short notice. A liquid-fuel rocket has to be fueled first and can not be held in readiness if or very long after it has been fueled. However, once a solid-fuel rocket has been ignited, it will keep burning. It can't be stopped and reignited whenever desired. Because a solid-fuel rocket can be kept ready for a long time, most military missiles employ solid fuels, but manned space flight needs the fine adjustments that can only be provided by liquid-fuel rocket. It may be added that a liquid-fuel rocket is an expensive device; a large solid-fund rocket is, by comparison, cheap.
(33)
A．Neither of the two types of rockets is very economical.
B．The liquid-fuel rocket is best.
C．Each type of rocket has certain advantages.
D．The solid-fuel rocket is best.
听力原文： The great advance in rocket theory 40 years ago showed that liquid-fuel rackets were far superior in every respect to the skyrocket with its weak solid fuel, the only kind of rocket then known. However, during the last decade, large, solid-fuel rockets with solid fuels a bout as powerful as powerful fuels have made their appearance, and it is a favorite layman's question to inquire which one is "better". The question is meaningless; one might as well as ask whether a gasoline or a diesel engine is "better", it all depends on the purpose. A liquid-fuel rocket is complicated, but has the advantage that it can be controlled beautifully. The bunting of the rocket engine can be stopped completely; it can be reignited when desired. A solid-fuel rocket, tin the other hand, is rather simple in construction, though hard to build when a really large size is desired. But once you have a solid-fuel rocket, it is ready for action at a very short notice. A liquid fuel rocket has to be fueled flint and Carl not be held in readiness in very long slier it has been fueled. However, once a solid-fuel rocket has been ignited, it will keep burning. It can't be stopped and reignited whenever desired. Because a solid fuel rocket can be kept ready for a long time, most missiles employ solid fuels, but manned space flight needs the line adjustments that can only be pro vided by liquid-fuel rocket. It may be added that a liquid-fuel rocket is an expensive device; a large solid-fund rocket is, by comparison cheap.
(33)
A．Neither of the two types of rockets is very economical.
B．The liquid-fuel rocket is best.
C．Each type of rocket has certain advantages.
D．The solid-fuel rocket is best.
【填空题】AV Clip 23: Walking to Better Health Watch the video clip three times and complete the following passage by filling in each blank with the word from the video clip. Intense physical exercise is not the only way to better health. Studies show that walking several times a week can slow the risk of many diseases. They include heart disease, (1)______ , diabetes, bone loss, arthritis and depression. Walking also can help you lose weight. Fast walking is good for the heart. It (2)_______the blood pressure. It raises the amount of good (3)_________in the blood. Researchers say walking can (4)_______reduce the risk of suffering a heart attack. Studies have shown that walking for thirty minutes a day can (5)______and possibly prevent the development of type 2 diabetes. People who are overweight have an (6)________high risk to develop this disease. Walking strengthens the muscles and builds up the bones that they are (7)________to. Studies show that women who walked and took calcium decreased their risk of developing(8)___________, or thinning of the bones. Walking can also help ease the pain of arthritis in areas where bones are joined. This is because walking (9)___________the muscles around the bones. Walking several times a week is a good way to control weight and lose (10)_______body fat. Studies show it can also help ease the sad feelings of depression. Experts say walking is one of the (11)_________ways to exercise. There is a low risk of (12)_______. So it is good for people who are starting an exercise program for the first time and for older people.
A.One
B.Two
C.Three
D.Four
The third type of composer I can only call，______a better name。the traditionalist type.
A. because of lack
B. for lack
C. for lack of
D. because lack of
What is implied in the passage？
A．If one wants to look better, he has to wear suits.
B．Different people may well choose the same type of clothes.
C．Suits are uniforms for businessmen.
D．Suit designers may combine different styles.
The simplest way to make transgenic animals is to inject a gene into a one-cell embryo and then implant the embryo in another animal. Under the right conditions, the new gene joins one of the embryo's strands of genes. Each cell created as the embryo divides gets a copy of the new gene. An alternative technique is to incorporate the gene into a type of virus known as a retrovirus that has been modified so it cannot reproduce itself after entering a cell. The virus, which cannot cause disease, delivers the gene to the cell's nucleus. Often this method is better than gene injection because a retrovirus always delivers just one gene, and the gene is always undamaged and complete.
The new biotechnology procedure discussed in this passage mainly concerns ______.
A．embryos
B．pigs, sheep and goats
C．commercial science
D．improvement of animal strains
A.One
B.Two
C.Three
D.Four
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