Although the machine is _______, you need to ...

Although the machine is _______, you need to use it correctly and safely.

A. in peace

B. in good use

C. in great need

D. in good condition

高三英语单项填空中等难度题查看答案及解析

The human body is a living machine, and, like all machines, it needs "fuel" （燃料） to supply it with energy．This is provided by the food we eat．But how much do we need to stay healthy?

The energy value of food is usually measured in calories．A calorie is the amount of heat required to raise the temperature of 1 kg of water by 1℃．The number of calories people need per day is different．Also, the number of calories you use at any one moment normally depends on the activity you are in．For example, you need more calories for standing than for sitting, more for running than for walking, and so on．

The energy in food is in the form of three kinds of chemical materials-carbohydrate（碳水化合物）, protein（蛋白质）and fat．Carbohydrate provides 3．8 Cal/gm, protein 4．0 Cal/gm, and fat 8．8 Cal/gm．Each food contains different amount of these materials, as the round pictures show．

1．The amount of calories supplied by equal amounts of milk, rice, and peanuts is the largest in the case of ________．

A．milk             B．rice               C．peanuts        D．rice or peanuts

2．Choose one statement from among A-D that agrees with the passage and the pictures above．

A．You need more calories for swimming than for mountain climbing．

B．Food contains energy in the form of carbohydrates, proteins and fuel．

C．Different people need different amounts of energy depending on their age, sex and the activities they are in．

D．3 grams of milk provides 16．6 calories because carbohydrate provides 3．8 Cal/gm, protein 4．0 Cal/gm and fat 8．8 Cal/gm．

3．This article mainly tells us ________．

A．all the energy is in food           B．the human body needs energy

C．the number of calories depends on your activity

D．we must only eat peanuts to get calories

高三英语阅读理解简单题查看答案及解析

The laptop is a machine which can be a mobile office；it can be used to entertain us and people can play computer games on them.One machine can perform many tasks at the same time.As technology grows，the size of the new laptop machines is decreasing.Now laptops are lighter，have smaller screen sizes，and perform better.Smaller screen laptops，which are more convenient to take along with，have been specially designed for professionals.Huge display screen laptops are still used by graphic(绘画的)designers and those who like playing computer games.

Laptops are advanced machines，and they can be very expensive.When we spend much money on something，we should take good care of it.I know some people who buy a new laptop every year.The reason they do this is that the old one either is broken or has some problems which cannot be fixed.Common problems are the breaking of the screen，the breaking of joints of the laptop，display problems，and keyboard problems.

Different problems will always come up with machines，and they cannot be avoided(避免)．Old machines will always have to be replaced by new ones.However，if we are more careful and handle our laptops with care，they will last for a longer period of time，and they will perform better.This is not a hard thing to do，but it will greatly increase the life and performance of laptops.

1.According to the first paragraph，the laptop is a machine which________.

2.The underlined word in the first  paragraph means “________”．

3.We infer that graphic designers still use huge display screen laptops most probably because________.

4.What can we learn from the second paragraph?

高三英语阅读理解中等难度题查看答案及解析

The laptop is a machine which can be a mobile office；it can be used to entertain us and people can play computer games on them. One machine can perform many tasks at the same time. As technology grows，the size of the new laptop machines is decreasing. Now laptops are lighter，have smaller screen sizes，and perform better. Smaller screen laptops，which are more convenient to take along with，have been specially designed for professionals. Huge display screen laptops are still used by graphic(绘画的)designers and those who like playing computer games.

Laptops are advanced machines，and they can be very expensive. When we spend much money on something，we should take good care of it. I know some people who buy a new laptop every year. The reason they do this is that the old one either is broken or has some problems which cannot be fixed. Common problems are the breaking of the screen，the breaking of joints of the laptop，display problems，and keyboard problems.

Different problems will always come up with machines，and they cannot be avoided(避免)．Old machines will always have to be replaced by new ones. However，if we are more careful and handle our laptops with care，they will last for a longer period of time，and they will perform better. This is not a hard thing to do，but it will greatly increase the life and performance of laptops.

1.According to the first paragraph，the laptop is a machine which________.

A．is being used by more and more people in the office

B．will take the place of desktops sooner or later

C．is specially designed for people who like playing computer games

D．can be used for both work and entertainment purposes

2.The underlined word in the first paragraph means “________”．

A．becoming smaller

B．becoming more important

C．becoming more popular

D．becoming better

3.We infer that graphic designers still use huge display screen laptops most probably because________.

A．huge display screen laptops are very cheap

B．small display screen laptops are not on sale yet

C．they can see their drawings more clearly

D．they also want to play computer games

4.What can we learn from the second paragraph?

A．That laptops can only be used for one year.

B．That laptops are not as good as desktops.

C．That the prices for laptops are too high.

D．That laptops may have problems which cannot be fixed.

高三英语阅读理解中等难度题查看答案及解析

I will teach you everything you need to know on How To Repair Your Sewing Machine Admittedly, the book is mainly about sewing machines with just four of the 70 pages, including the copy clear, sharp pictures of many different sewing machines, cleaning, and timing, etc., so there is no need to turn pages back and forth in order to find the picture that goes with the text. It’s clear, and it’s simple instructions to teach you How To Repair Your Sewing Machine.

I will teach you how to thread all the different styles of sewing machines, plus winding the bobbin and selecting the correct needle.

I will show you how to properly clean all the different sewing machines, plus how to check the virious parts for wear and breakage. I will show you how to check for problems such as noisiness,thread breakage, needle breakage,etc.

I will show you how to straighten the needle and presser（压脚杆）bars and level the presser foot on all sewing machines.

I will show you how to check motors, lights, controls and wiring（线路）for various problems. I will show you how to properly time the needle bar, the hoor or shuttle, etc., so the sewing machine will sew perfectly on all tyes of material and satisfy customers.

I will show you how to set the tensions on all the different sewing machines by having an actual gauge（计量器）to use in this setting.

And I will show you where to purchase wholesale parts and new sewing machines, including where industrial machines can be purchased wholesale.

1.The purpose of the writer is to      .

A.teach you how to repair your sewing machine

B.draw your attention to his book

C.show you where to repair your sewing your machine

D.show off his advantage over others

2.The underlined word in the third paragraph means ______.

A.use      B.part     C.breaking      D.repair

3.In order to get a picture matching the text, you      .

A.have to turn over the book      B.don’t have to turn over the book

C.should read the whole book carefully       D.need read the tips as follows

4.If you want to buy a lot of industrial machines, you can     .

A.tell the writer of the book  B.order them directly from the factory

C.find the detailed information in the book  D.order according to the picture

高三英语阅读理解简单题查看答案及解析

I will teach you everything you need to know on How To Repair Your Sewing Machine Admittedly, the book is mainly about sewing machines with just four of the 70 pages, including the copy clear, sharp pictures of many different sewing machines, cleaning, and timing, etc., so there is no need to turn pages back and forth in order to find the picture that goes with the text. It’s clear, and it’s simple instructions to teach you How To Repair Your Sewing Machine.

I will teach you how to thread all the different styles of sewing machines, plus winding the bobbin and selecting the correct needle.

I will show you how to properly clean all the different sewing machines, plus how to check the virious parts for wear and breakage. I will show you how to check for problems such as noisiness,thread breakage, needle breakage,etc.

I will show you how to straighten the needle and presser（压脚杆）bars and level the presser foot on all sewing machines.

I will show you how to check motors, lights, controls and wiring（线路）for various problems. I will show you how to properly time the needle bar, the hoor or shuttle, etc., so the sewing machine will sew perfectly on all tyes of material and satisfy customers.

I will show you how to set the tensions on all the different sewing machines by having an actual gauge（计量器）to use in this setting.

And I will show you where to purchase wholesale parts and new sewing machines, including where industrial machines can be purchased wholesale.

1.The purpose of the writer is to ________.

A.teach you how to repair your sewing machine

B.draw your attention to his book

C.show you where to repair your sewing your machine

D.show off his advantage over others

2.The underlined word in the third paragraph means ______.

3.In order to get a picture matching the text, you ________.

4.If you want to buy a lot of industrial machines, you can ________.

高三英语阅读理解中等难度题查看答案及解析

Russia has announced that it is developing a specialized washing machine for astronauts to use in space. The announcement came from a missile, spaceship and space station manufacturer RKK.

Normal washing machines require gravity to function, not to mention significant amounts of water that has to be stored somewhere and increases weight — they are not suitable for space missions (任务). This means that astronauts cannot wash their clothes and either have to pack enough for their whole trip or rely on costly resupply missions and throw used items into space.

Crewmembers taking part in long-term missions on the International Space Station (ISS) often end up wearing the same garments for several continuous days and just change into new ones when they get dirty. Aside from this issue, wearing dirty clothes can be uncomfortable for the astronauts and could also provide perfect conditions for dangerous bacteria to grow and spread.

RKK has previously outlined plans for a space washing machine in a Russian space industry journal paper published in 2017. In the paper, the authors estimated (估计) that 1,450 pounds of clothes are surprisingly transported to the ISS every year to cover the requirements of just three astronauts. And this quantity could increase to three tons for a two-year voyage to Mars involving six crewmembers and could increase the costs and complexity of a mission.

The Russian scientists said that, instead of water, the washing machine would use the carbon dioxide produced by the astronauts’ breathing in the spaceship. Special technology would then turn the gas into a liquid under high pressure in order to clean the clothes.

The Russian designs are not the first proposals for a space washing machine. NASA has previously made a model of a low-power, low-water washing device (设备) which was designed to work in the microgravity of low-Earth orbit or that of the moon or Mars.

1.Normal washing machines are not suitable in the spaceship mainly because __________.

A.they lead to serious space pollution

B.they make some bacteria spread

C.they require gravity to function

D.they increase the weight of the spaceship

2.What might be the biggest advantage of the specialized washing machine?

A.Helping astronauts dry their clothes.

B.Having a competition against NASA.

C.Making the missions cheaper and easier.

D.Getting astronauts to adapt to the environment.

3.Where can astronauts get the liquid for washing clothes in the spaceship?

A.From the water tank in the spaceship. B.From the outer space.

C.From the recycling water in the spaceship. D.From the gas carbon dioxide.

4.What does the text mainly talk about?

A.Russia is developing a space washing machine.

B.A space washing machine has been used in Russia.

C.NASA’s made a model of a space washing machine.

D.RKK transports tons of clothes to astronauts in space.

高三英语阅读理解中等难度题查看答案及解析

Like any good machine, the brain needs a little care and attention as it ages to ensure it continues to run in good working order. 1. .

Don’t lose faith in your abilities

As people get older, it’s easy to think that your memory is already poor. 2. . So if you do find yourself hesitating in a doorway not really knowing where you are meant to be, just see it as a reminder to push your memory a little bit harder.

Learn a language or a musical instrument

3., such as learning the piano or picking up a new language. Both rely on a wide skill set, exercising your memory, attention and so on.

4.

Obesity can harm your brain in many ways. The good news is that certain nutrients seem to reduce age-related damage to the brain. This may explain why older people eating a typically Mediterranean diet tended to show the same cognitive skills as people 7.5 years their younger.

Build your body

5.. Physical activity not only builds a better blood flow to the brain, but also increases proteins such as “nerve growth factor”. So just choose a training that suits your fitness.

A. Don’t feast on junk food

B. Benefit your brain from a healthy diet

C. We tend to lose confidence in our mental abilities

D. Here are some promising ways to sharpen your brain

E. You should consider a more ambitious mental workout

F. In fact, it is just as likely to happen to young and old alike

G. Getting in shape is one of the surest ways to build your mind

高三英语七选五困难题查看答案及解析

This machine is very easy ________ . Anybody can learn to use it in a few minutes.

A.  operating    B.  to be operating    C.  operated       D.  to operate

高三英语单项填空中等难度题查看答案及解析

This machine is very easy______. Anybody can learn to use it in a few minutes.

A. operating                        B. to be operating              C. operated                         D. to operate

高三英语单项填空简单题查看答案及解析