Machine learning is a way of teaching computers to do tasks.In the past，to do anything，computers depended on detailed，step-by-step instructions written by a person.But with machine learning，computers pick up new skills on their own，using examples or experience.This makes machine learning a powerful form of artificial intelligence，or AI.AI is the ability of a machine to think or learn like a person.Al systems power many kinds of machines-from smartphones to robots.
There are a few types of machine learning.The most common is supervised（監(jiān)督的）learnjye.aig.In this method，a computer is fed lots of sorted training data（數(shù)據(jù)）.For example，it may look at many photos of dogs.Each photo might be sorted by the dog's kind.By studying those photos，the computer learns what each kind of dog looks like.Then，the computer can pick out dog kinds in new，unsorted photos.The more data the computer studies，the better it gets at its task.
Another important kind of machine learning is reinforcement（強(qiáng)化）learning.Using this type of learning is sort of like training your dog to do a trick（把戲）.The computer learns to achieve some goal by interacting with its environment.When the computer makes a choice that brings it closer to its goal，it gets a virtual reward.Through trial and error，the computer learns to make better choices.This type of machine learning has helped computers master difficult games like Go and StarCraft II.It has also been used to teach self-driving cars how to get around.
Machine learning has helped create technology all around us.It powers language translators and search engines.When your streaming services recommend new shows you might like，that's machine learning at work.Machine learning systems also organize posts in social media feeds.They even help judge diseases，In many ways，the problem-solving power of machine learning is reshaping the world.
（1）What can we know about machine learning from the text？ CC
A．It directs computers to follow programs.
B．It makes computers run under no control.
C．It is a form of artificial intelligence.
D．It is a kind of function of all computers.
（2）How can computers lean better in supervised learning？ AA
A．By studying as much data as possible.
B．By following step-by-step instructions.
C．By telling differences between dog kinds.
D．By making as many attempts as possible.
（3）What do computers learn in reinforcement learning？ CC
A．Doing tricks.
B．Setting goals.
C．Making choices.
D．Simplifying steps.
（4）What is the author's attitude to machine learning？ DD
A．Uncaring.
B．Doubtful.
C．Unclear.
D．Supportive.
【答案】C；A；C；D
【解答】
【點(diǎn)評(píng)】
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發(fā)布：2024/5/27 14:0:0組卷：2引用：2難度：0.6
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1．"Quick，quick，slow，slow，" my husband said as I was trying to focus．We frequently stepped on each other's feet．Both of us were being rhythmically challenged，and we figured a series of lessons might help us look somewhat elegant on the dancing floor．However，it didn't．
It didn't matter that the lessons didn't pay off．Our learning something new together gave us a string of good memories，such as taking a Thai cooking class on a cold Chicago night and learning how to make classic cocktails （雞尾酒） in a common bar．These experiences are my best memories from the past 10 years．We always have such a great time when we're trying something new together．It seems to have strengthened our relationship，and makes me feel like we have a closer connection．
It turns out my theory as such is backed by research．One study shows that learning new things with your spouse （配偶），friends，or partners，can strengthen your connection or friendship．But how exactly does this work？The key is vulnerability（弱點(diǎn)）． "Learning new things together strengthens bonds because it is at those moments that we can show our vulnerability to one another，"says Dr．Hisla Bates． "When we are learning a new task，misfortunes and failures are bound to happen．In those moments when we fail，the other party can be there in favor of us．We can work together to find a solution，and working together helps deepen the connection．"
The benefits gained from learning new things with your partner can come from activities as small as hiking，trying a new recipe，going boating in the local lake or taking a fitness class together．You don't have to bungee jump or skydive to grow closer．Try selecting activities that both partners are unfamiliar with，as this will ensure you're on the same page．
Trying to learn something new together once a month will benefit you and your spouse or friends．Overall，some of my best memories with my husband are the moments when we are learning something new together．
（1）What were the author and her husband doing in Paragraph 1？
A．Playing sports．
B．Practising dance．
C．Teaching lessons．
D．Taking a walk．
（2）What can we learn from the author's experiences？
A．Practice makes perfect．
B．Good memories last a long time．
C．Processes matter more than results．
D．Well begun is half done．
（3）Why does learning new things together strengthen partners' relationship？
A．It can encourage them to teach and praise each other．
B．It helps improve the understanding of each other．
C．It can reduce each other's loneliness and boredom．
D．It helps find each other's weaknesses and offer support．
（4）What's the best title for the text？
A．The power of learning new things together
B．The advantages of taking different lessons．
C．The challenge of acquiring new knowledge．
D．The importance of improving people's bonds．發(fā)布：2025/1/1 13:30:1組卷：7引用：5難度：0.5 -
2．Once upon a time，there was a king who wanted to educate his people not to complain and expect others （1）
（solve） their problems.A good idea occurred to him.Early one morning，he （2）（disguise） himself and went to a local village.He placed a large stone in the middle of the main street and hid gold coins under the stone.Then he hid behind a huge maple tree and watched.A milkman crashed into the stone， （3）（spill） the milk everywhere.But he picked himself （4）and went away angrily.After a while，a group of women came along，each（5）（balance） a pot of water on her head.One woman tripped over the stone.At last she limped away in （6）（tear）.But none of them thought about moving the stone out of the road.Finding nobody making （7）attempt to move it，the king was in despair.Just then，a girl came along and pushed the stone with all her might.After a great deal of effort，she （8）（final） succeeded in moving it to the side of the street.To her surprise，she saw the gold coins （9）the stone had been.The king told the girl that the gold belonged to （10）.發(fā)布：2024/12/20 2:30:1組卷：42引用：2難度：0.5 -
3．Let's take a minute to think about the water we use.The human body is 60% water and we need to drink lots of water to be healthy.When we are thirsty we just go to the kitchen and fill a glass with clean water.
（1）For example，farmers，who produce the food we eat，use water to make the plants grow.When we turn on a light or switch on a TV or a computer we use energy and we need water to produce this energy.
The truth is that we are lucky enough to have clean water whenever we want，but this is not the case for many people around the world. （2）That's around one in 10 people in the world.If we drink dirty water，we can catch diseases from the bacteria and become ill.Every year over 500，000 children die from diarrhea（腹瀉） from dirty water.That's around 1，400 children every day!Also，in some countries children walk many kilometres every day to get water. （3）Therefore，they don't have time to learn how to read or write and don't get an education.
（4）On this day every year，countries around the world hold events to educate people about the problems of dirty water and that clean water is something that everyone should have around the world.At one school in the UK，children between the ages of 10 and 15 walk 6km with six litres of water. （5）People give them money to do this and all the money helps get clean water to as many people as possible around the world.
A.We use water indirectly，too.
B.Every system in our body depends on water to function.
C.It is to inspire people to learn more about water-related problems.
D.If children walk many hours a day to get water，they can't go to school.
E.Did you know that around 750 million people do not have clean water to drink？
F.In 1993 the United Nations decided that March 22nd is the World Day for Water.
G.In this way，they know how it feels to walk a long distance carrying heavy bottles.發(fā)布：2025/1/1 14:0:1組卷：7引用：4難度：0.6
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