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问答题Practice 1　　Heat loss by sweating depends on the fact that when a liquid evaporates, it absorbs an enormous quantity of heat from its surroundings. Therefore, when I am of sweat evaporate, a great deal of heat is absorbed from the surface of the body i

题目
问答题
Practice 1　　Heat loss by sweating depends on the fact that when a liquid evaporates, it absorbs an enormous quantity of heat from its surroundings. Therefore, when I am of sweat evaporate, a great deal of heat is absorbed from the surface of the body in contact with it. 1______　　2______ The first is the amount of movement of air surrounding the body. The second is the amount of water vapor in the air that surrounds the body.　　3______ For this reason, sweat evaporates very rapidly on windy days, and the rate of heat loss by sweating is much more than on a still day. This accounts for the fact that hot still days are much less comfortable than hot windy days. In contrast, the sweat evaporates very rapidly on hot windy days, and cools the body quickly and effectively.　　4______ When air is carrying the maximum amount of water vapor that it can hold, it is said to be 100% saturated with water vapor. The relative humidity of the air is said to be 100%. Under these conditions the air cannot carry any water, so no water can evaporate. When the relative humidity is high, therefore, sweat cannot evaporate. Instead, it forms large drops and runs off your skin without cooling you.　　5______ It is obvious that under these conditions, evaporation will be much more rapid. Therefore, sweating will be much more effective as a method of losing heat from the body. On a hot dry day, sweat evaporates as soon as it is formed, and you feel reasonably cool even though the temperature of your environment is very high.[A] When the air is very dry and carries no water at all, the relative humidity is said to be 0%.[B] The second factor is the amount of water vapor in the air－the humidity.[C] Hot windy days are much more comfortable than hot still days.[D] This heat transfer occurs even if the environment is hotter than the body.[E] When air moves over the surface of water, the amount of evaporation is greatly increased.[F] You might expect the highest incidence of a heat stroke when the maximum temperature is 100 and humidity is 50%.[G] Two factors affect the rate of evaporation of sweat, and therefore the effectiveness of sweating as a method of cooling the body.
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相似问题和答案

第1题：

Which of the following statements about the warm-blooded mammals is true according to the text?

A. They can change their environments.

B. They can adjust body heat to keep their ideal temperature.

C. They can make food from chemicals.

D. They get most of their heat from the environment.


正确答案：B
[解析] 见最后一段，第三、四行。

第2题：

共用题干
How the Body Keeps the Same Temperature

The temperature of your body should always be the same if you are fine,no matter whether the weather
is hot or cold.That is why the doctor tests your temperature with a thermometer when you are sick.Normally,
your body teniperature is ninety-eight point six degrees Fahrenheit.If it is_______(51)than that,it is a
stire sign that something is wrong with your body.
Your body keeps the same temperature all the time,because it balances the heat it produces and the
heat it_______(52)off. It is always burning up food and producing heat.It can produce heat faster
when the body needs or give off heat faster when the body becomes too warm.Let's see_______(53)
this works.
The heat of your body is given off chiefly through the skin.When you feel_______(54),your skin
is tight and shows"goose flesh".When you feel chilly,you must_______(55)around to keep warm.
_______(56)your muscles begin to work,bum up fuel and produce more heat.It is not_______(57)to
shiver,so you usually prefer warming up by taking exercise,or put_______(58)more clothes to keep
warm。
When you get warm,the skin is loose and soft. It is so supplied_______(59)blood that heat is giv-
en off rapidly. If you get too warm,you begin to sweat and_______(60)body heat is used in evaporating
the, moisture in your body.In warm_______(61)or warm rooms,you wear less clothing,
_______ (62)heat can be given off freely. You prefer less exercise because your body is warm_______(63),and
the extra heat produced by taking too much exercise makes you uncomfortable.
Now you see why you_______(64)differently in different kinds of weather. In summer,when it is
hot,you feel tired and lazy.You do not care to work or play,but enjoy lying down and doing nothing. When
you get out of door in winter,the cold air makes you feel_______(65).You want to run and play.

_________(61)
A:weather
B:climate
C:circumstance
D:environment

答案：A
解析：
前面的内容讲的是，体温要保持一定的稳定性，人的身体才会健康。由此可推断，体温过高或过低都说明人的身体出现了问题。结合选项可知选D。
give off意为“发出，放出（气味、热等）";put off意为“推迟”;show off意为“炫耀”;keep off意为“使……远离”。结合句意应选A。
前面简单提到我们的身体需要热量的时候就能产生热量，我们的身体变得太暖和的时 候就会很快地释放热量。根据上下文可知，这里是一个过渡的句子，意为“让我们看看这是怎 么工作的”。故选A。
结合常识可知，当你感到冷的时候，会起鸡皮疙瘩。因此选D。
make做；eat吃；work工作；jump跳。这里说的是如果你感到很冷，你必须要跳来跳去 来取暖。故选D。
前面提到跳来跳去来取暖，那么接着肌肉就开始工作了。then表示“接着”，符合句意。
结合常识可知，颤抖是不令人愉快的，且后面的句子中有prefer，因此应选B。
put on意为“穿上”，符合句意。
supply with意为“提供……”，为固定搭配，符合句意。
more更多的；enough足够的；many很多little很少。此句意为：更多的身体热量用来蒸 发身体里的水分。因此选A。
weather天气；climate气候；circumstance条件，状况；environment环境。结合句意应 选A。
or否则；so that以便；but但是；and和。结合句意应选B。
本句的意思是：你喜欢少运动是因为你的身体足够的暖和。因此选C。
根据后面讲的夏天和冬天的感受可知，这里应选feel,
结合上下文的意思可知，夏天人们喜欢躺在床上什么也不做，而在冬天人们通过运动 来取暖。由此可知，在冬天人们显得生机勃勃。

第3题：

C

Sometimes, the simplest ideas are the best. For example, to absorb heat from the sun to heat water, you need large, flat, black surfaces. One way to do that is to build those surfaces specially, on the roofs of buildings. But why go to all that trouble when cities are full of black surfaces already, in the form. of asphalt (柏油) roads?

Ten years ago, this thought came into the mind of Arian de Bondt, a Dutch engineer. He finally persuaded his boss to follow it up. The result is that their building is now heated in winter and cooled in summer by a system that relies on the surface of the road outside.

The heat-collector is a system of connected water pipes. Most of them run from one side of the street to the other, just under the asphalt road. Some, however, dive deep into the ground.

When the street surface gets hot in summer, water pumped through the pipes picks up this heat and takes it underground through one of the diving pipes. At a depth of 100 metres lies a natural aquifer (蓄水层) into which several heat exchangers (交换器) have been built. The hot water from the street runs through these exchangers, warming the ground-water, before returning to the surface through another pipe. The aquifer is thus used as a heat store.

In winter, the working system is changed slightly. Water is pumped through the heat exchangers to pick up the heat stored during summer. This water goes into the building and is used to warm the place up. After performing that task, it is pumped under the asphalt and its remaining heat keeps the road free of snow and ice.

64. Which of the following is true according to the first two paragraphs?

A. Arian de Bondt got his idea from his boss.

B. Large, flat, black surfaces need to be built in cities.

C. The Dutch engineer's system has been widely used.

D. Heat can also be collected from asphalt roads.


正确答案：D

第4题：

单选题
The function of a lubricating oil is （） to lubricate the running surface （） to carry away a great deal of heat.
A

not；but

B

neither；nor

C

either；or

D

not only；but also


正确答案： A
解析： 暂无解析

第5题：

共用题干
How the Body Keeps the Same Temperature

The temperature of your body should always be the same if you are fine,no matter whether the weather
is hot or cold.That is why the doctor tests your temperature with a thermometer when you are sick.Normally,
your body teniperature is ninety-eight point six degrees Fahrenheit.If it is_______(51)than that,it is a
stire sign that something is wrong with your body.
Your body keeps the same temperature all the time,because it balances the heat it produces and the
heat it_______(52)off. It is always burning up food and producing heat.It can produce heat faster
when the body needs or give off heat faster when the body becomes too warm.Let's see_______(53)
this works.
The heat of your body is given off chiefly through the skin.When you feel_______(54),your skin
is tight and shows"goose flesh".When you feel chilly,you must_______(55)around to keep warm.
_______(56)your muscles begin to work,bum up fuel and produce more heat.It is not_______(57)to
shiver,so you usually prefer warming up by taking exercise,or put_______(58)more clothes to keep
warm。
When you get warm,the skin is loose and soft. It is so supplied_______(59)blood that heat is giv-
en off rapidly. If you get too warm,you begin to sweat and_______(60)body heat is used in evaporating
the, moisture in your body.In warm_______(61)or warm rooms,you wear less clothing,
_______ (62)heat can be given off freely. You prefer less exercise because your body is warm_______(63),and
the extra heat produced by taking too much exercise makes you uncomfortable.
Now you see why you_______(64)differently in different kinds of weather. In summer,when it is
hot,you feel tired and lazy.You do not care to work or play,but enjoy lying down and doing nothing. When
you get out of door in winter,the cold air makes you feel_______(65).You want to run and play.

_________(64)
A:wear
B:feel
C:dress
D:sweat

答案：B
解析：
前面的内容讲的是，体温要保持一定的稳定性，人的身体才会健康。由此可推断，体温过高或过低都说明人的身体出现了问题。结合选项可知选D。
give off意为“发出，放出（气味、热等）";put off意为“推迟”;show off意为“炫耀”;keep off意为“使……远离”。结合句意应选A。
前面简单提到我们的身体需要热量的时候就能产生热量，我们的身体变得太暖和的时 候就会很快地释放热量。根据上下文可知，这里是一个过渡的句子，意为“让我们看看这是怎 么工作的”。故选A。
结合常识可知，当你感到冷的时候，会起鸡皮疙瘩。因此选D。
make做；eat吃；work工作；jump跳。这里说的是如果你感到很冷，你必须要跳来跳去 来取暖。故选D。
前面提到跳来跳去来取暖，那么接着肌肉就开始工作了。then表示“接着”，符合句意。
结合常识可知，颤抖是不令人愉快的，且后面的句子中有prefer，因此应选B。
put on意为“穿上”，符合句意。
supply with意为“提供……”，为固定搭配，符合句意。
more更多的；enough足够的；many很多little很少。此句意为：更多的身体热量用来蒸 发身体里的水分。因此选A。
weather天气；climate气候；circumstance条件，状况；environment环境。结合句意应 选A。
or否则；so that以便；but但是；and和。结合句意应选B。
本句的意思是：你喜欢少运动是因为你的身体足够的暖和。因此选C。
根据后面讲的夏天和冬天的感受可知，这里应选feel,
结合上下文的意思可知，夏天人们喜欢躺在床上什么也不做，而在冬天人们通过运动 来取暖。由此可知，在冬天人们显得生机勃勃。

第6题：

Heat exhaustion is caused by excessive ______.

A.loss of body temperature

B.loss of water and salt from the body

C.gain in body temperature

D.intake of water when working or exercising


正确答案：B
身体里的水和盐大量丧失导致了热量的损耗。

第7题：

共用题干
How the Body Keeps the Same Temperature

The temperature of your body should always be the same if you are fine,no matter whether the weather
is hot or cold.That is why the doctor tests your temperature with a thermometer when you are sick.Normally,
your body teniperature is ninety-eight point six degrees Fahrenheit.If it is_______(51)than that,it is a
stire sign that something is wrong with your body.
Your body keeps the same temperature all the time,because it balances the heat it produces and the
heat it_______(52)off. It is always burning up food and producing heat.It can produce heat faster
when the body needs or give off heat faster when the body becomes too warm.Let's see_______(53)
this works.
The heat of your body is given off chiefly through the skin.When you feel_______(54),your skin
is tight and shows"goose flesh".When you feel chilly,you must_______(55)around to keep warm.
_______(56)your muscles begin to work,bum up fuel and produce more heat.It is not_______(57)to
shiver,so you usually prefer warming up by taking exercise,or put_______(58)more clothes to keep
warm。
When you get warm,the skin is loose and soft. It is so supplied_______(59)blood that heat is giv-
en off rapidly. If you get too warm,you begin to sweat and_______(60)body heat is used in evaporating
the, moisture in your body.In warm_______(61)or warm rooms,you wear less clothing,
_______ (62)heat can be given off freely. You prefer less exercise because your body is warm_______(63),and
the extra heat produced by taking too much exercise makes you uncomfortable.
Now you see why you_______(64)differently in different kinds of weather. In summer,when it is
hot,you feel tired and lazy.You do not care to work or play,but enjoy lying down and doing nothing. When
you get out of door in winter,the cold air makes you feel_______(65).You want to run and play.

_________(56)
A:However
B:While
C:Then
D:Therefore

答案：C
解析：
前面的内容讲的是，体温要保持一定的稳定性，人的身体才会健康。由此可推断，体温过高或过低都说明人的身体出现了问题。结合选项可知选D。
give off意为“发出，放出（气味、热等）";put off意为“推迟”;show off意为“炫耀”;keep off意为“使……远离”。结合句意应选A。
前面简单提到我们的身体需要热量的时候就能产生热量，我们的身体变得太暖和的时 候就会很快地释放热量。根据上下文可知，这里是一个过渡的句子，意为“让我们看看这是怎 么工作的”。故选A。
结合常识可知，当你感到冷的时候，会起鸡皮疙瘩。因此选D。
make做；eat吃；work工作；jump跳。这里说的是如果你感到很冷，你必须要跳来跳去 来取暖。故选D。
前面提到跳来跳去来取暖，那么接着肌肉就开始工作了。then表示“接着”，符合句意。
结合常识可知，颤抖是不令人愉快的，且后面的句子中有prefer，因此应选B。
put on意为“穿上”，符合句意。
supply with意为“提供……”，为固定搭配，符合句意。
more更多的；enough足够的；many很多little很少。此句意为：更多的身体热量用来蒸 发身体里的水分。因此选A。
weather天气；climate气候；circumstance条件，状况；environment环境。结合句意应 选A。
or否则；so that以便；but但是；and和。结合句意应选B。
本句的意思是：你喜欢少运动是因为你的身体足够的暖和。因此选C。
根据后面讲的夏天和冬天的感受可知，这里应选feel,
结合上下文的意思可知，夏天人们喜欢躺在床上什么也不做，而在冬天人们通过运动 来取暖。由此可知，在冬天人们显得生机勃勃。

第8题：

For what purpose are the diving pipes used?

A. To absorb heat from the sun.

B. To store heat for future use.

C. To turn solar energy into heat energy.

D. To carry heat down below the surface.


正确答案：D

第9题：

Which of the following is the MOST critical component related to removing heat from the CPU?（）

  • A、Vented case
  • B、Number of fans
  • C、Thermal paste
  • D、Liquid cooling

正确答案:C

第10题：

单选题
The rate of heat transfer from a hot region to a cold region is affected most by the （）.
A

size of the heat sink

B

temperature difference between the regions

C

size of the heat source

D

total heat of the system


正确答案： C
解析： 暂无解析

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