题目内容
（请给出正确答案）
A.pharynx
B.larynx
C.nasopharynx
D.hypopharynx
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更多“The throat is a muscular tube …”相关的问题
第1题
Muscles are stringy bundles of fibers varying from one five-thousandth of an inch to about three inches. They have three unique characteristics: they can become shorter and thicker and can stretch to their original position. 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 involuntary --in other words, work without conscious direction. The voluntary muscles, those that we move consciously to perform. particular action, number more than five hundred. Women have only 60 to 70 percent as 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.
Intelligent use of the muscles means that ______.
A．one always knows what his muscles are doing
B．one performs simple actions without working
C．one's muscles are used only to the extent necessary for each action they perform
D．one improves muscular action consciously
第2题
Muscles are stringy bundles of fibers varying from one five-thousandth of an inch to about three inches. They have three unique characteristics: they can become shorter and thicker; they can stretch to their original position. 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 involuntary-in other words, work without conscious direction. The voluntary muscles, those that we move consciously to perform. particular action, 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.
Intelligent use of the muscles means that ______.
A．one always knows what his muscles are doing
B．one performs simple actions without working
C．one's muscles are used only to the extent necessary for each action they perform
D．one improves muscular action consciously
第3题
Muscles are stringly bundles of fibers varying from one five-thousandth 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
Intelligent use of the muscles means that ________.A.one always knows what his muscles are doing
B.one performs simple actions whithout working
C.one‘s muscles are used only to the extent necessary for each action they perform
D.one improves muscular action consciously
Muscles are unique fibers because， they can ________.A.contract
B.stretch
C.retract
D.do all of the above
Under a microscope， muscle cells appear to be _______.A.textured like wood
B.colored like wood
C.smooth and red
D.short and thick
According to the selection more than half of a person‘s body is composed of ______.A.voluntary muscles
B.involuntary muscles
C.muscle fibers
D.sensory nerves
请帮忙给出每个问题的正确答案和分析，谢谢！
第4题
(28) The Botanic Garden has twenty-five thousand plants in its collection. (27) Visitors can see many of them in the Garden's public Conservatory. It is a large stone and glass structure near the U.S. Capitol building.
There is a titan arum plant at the U.S. Botanic Garden. It is called the "corpse plant" because its flower smells something like a dead body. Everywhere you look in the Conservatory, something appeals to your eyes. (28) A visitor can move seemingly from one part of Earth to another in just a few seconds. A short walk takes you from desert to thick forest.
(28) The Conservatory offers examples of plants that provide the makings of medicine. It also has plants of special interest to children. (28) Rare and endangered plants occupy a place all their own.
Why did the Congress establish the U.S. Botanic Garden?
A．For scientific research on the growing things.
B．For make a center of beauty.
C．For attracting more children to visit.
D．For improving the environmental conditions.
第5题
Dog training also involves teaching the owner. Going through dogtraining is something that every dog owner should do. It is like going toschool over again. It is all about communication, and you need tolearn to communicate with your dog.
Training your dog to ”sit” is probably the first thing you will trainyour dog to do. When you want your dog to sit, hold a treat above hishead and say “sit”. As the dog sits, say “sit”again and thenimmediately give him the treat. Your dog should drop into a “sit” position in order to reach the food.
Teaching your dog to fetch promotes bonding. To do this, first throwa ball, and give the command “fetch”. As he starts to run towards it, yell“fetch”again. Instead of a ball, you may use the object your dog lovesmost. Do not play fetch with heavy items or sticks, however, as this candamage the dog ’s teeth or injure the dog. A well-trained dog should remain where his owner commands, so“stay”is an important command in dog training as well. Since it is moreinvolved, that will be the subject of another article.
Dog training is a very physical activity, so be prepared to be tired. And dog training is never without risk of injury, especially with moreaggressive dogs. One major mistake many dog owners make is to thinkthat the dog training is over. Training your dog continues throughoutyour dog&39;s life.
What docs the author say about dog training?
A.It requires professional guidance.
B.It is necessary for every dog.
C.It gives dogs good exercise.
D.It is an easy job for trainers.
What is the most important thing for dog trainers to do?A.Learn to communicate with dogs.
B.Give dogs timely encouragement.
C.Create right circumstances for dogs.
D.Teach dogs desired behaviors.
To train dogs to fetch ，trainers often start with a ( ).A.stick
B.ball
C.treat
D.trick
Dog trainers usually train their dogs first to ( ).A.jump
B.slay
C.fetch
D.sit
Many dog owners tend to think that dog training( ).A.can be dangerous
B.costs much money
C.lakes a short time
D.can be very tiring
请帮忙给出每个问题的正确答案和分析，谢谢！
第6题
The 500 U.K. motor workers who had been on strike in High Town for the past 3 weeks went back to work this morning. This follows successsful talks between management and union representatives, which resulted in a new agreement on fewer working hours. A spokesman for the managemnt said that they hoped they could now get back to producing cars and they lost a lot of money and orders over this dispute. And finally, the weather: After a cold starts, most of the country shall be warm and sunny. But towards late afternoon, rain will spread from Scotland to cover most parts by midnight.
When was the news broadcast?
A．At night.
B．At noon.
C．In the morning.
D．In the afternoon.
第7题
Millions of people around the world cook their food over a smoky fire every day. It is often difficult to find wood for the fire. People who do not have wood must spend large amounts of money on cooking fuel. However, there is a much easier way to cook food using energy from the sun. Solar cookers, or ovens, have been used for centuries.
Solar ovens consist of a system of reflectors and a cooking pot. The rest is up to your imagination! Once you have collected or bought your solar oven, you can use it to prepare hot meals in the backyard, at a campground or wherever your heart desires.
Of all the inventions that could benefit humankind, a reliable solar cooker remains one of the most necessary. Countless people across the developing world still cook their food by burning wood or even cow dung, causing breathing problems and severe pollution in some regions.
The searching for a practical solar cooker has gone on for decades and produced dozens of models. But none of them have caught on importantly for use in the developing world because they can’t store heat. Without the ability to store heat, a cooker cannot be used, for example, on cloudy days.
But now a group based at the Norwegian University of Science and Technology (NTNU) is reporting a discovery in solar cookers. They say it will lead to the production of practical solar cookers within a year and a half and it can store enough heat during a sunny day to work for an entire additional day, even if it is cloudy.
* People who do not have wood must spend small amounts of money on cooking fuel.{T、F}
* There is a much easier way to cook food using energy from the sun.{T、F}
* Solar cookers, or ovens, have not been used for centuries.{T、F}
* Solar ovens consist of a system of reflectors and a cooking pot.{T、F}
* Without the ability to store heat, a cooker can be used, for example, on cloudy days.{T、F}
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