A．根据上文介绍的三个步骤，将下列A、B、C、D四个选项进行-优题课

A lot of animals travel from one place to another． We call this migration．

In Africa， large animals， like elephants and zebras， migrate to find food and water． They usually follow the same ways every year．

A lot of birds migrate to find food and better weather， too． They are usually birds that eat insects．They spend the summer in northern Europe， because there are lots of insects there．In the winter there aren't any insects， so the birds fly south to southern Europe and Africa，

Some insects migrate， too． In North America， millions of monarch butterflies fly south to spend the winter in Mexico， California and Florida， where it's warmer． They travel 50﹣65 km each day and they travel about 1，125 km，

Some fish migrate to breed（繁殖）．Salmon（鲑鱼） can swim over 20，000 km in their life．They are born in rivers in Ireland， Scotland and other places in northern Europe． The young fish swim down the river to the sea and into the Atlantic Ocean．They live in the ocean until they are adults．Then they return to the river where they were born， They lay their eggs in the river and then they usually die． Salmon do this， because their eggs are safer in the river， Other fish can't eat them．

Arctic terns （北极燕鸥） travel the furthest when they migrate． They spend the summer in the Arctic，but when winter comes they fly to the Antarctic， because it's summer there． The next year they fly back to the Arctic again．In one year these small birds travel 36 ，000km from one end of the earth to the other and back again． Nobody knows how they do it．

（1）According to the passage， monarch butterflies in North America migrate to　　．

A． find insects

B． look for water

C． find better weather

D． produce young

（2）Adult salmon swim back to the river because　　．

A． they won't be eaten by other big fish

B． they want to lay eggs in a safer place

C． they are getting ready to die there

D． they want to go where they grew up

（3）Which of the following is true about animals' migration？　　

A． Elephants in Africa usually travel the same way each year．

B． Most birds fly to southern Europe and Africa in summer．

C． Some insects travel 1，125 km each day．

D． Salmon swim 20 ，000 km each year．

（4）The example of Arctic terns in the last paragraph is used mainly to show　　．

A． the distance of migration

B． the purpose of migration

C． the direction of migration

D． the time of migration

Traffic lights are red， yellow and green． They are very important signals（信号）． Traffic lights are usually placed at busy street corners to help control traffic． Sometimes， they are on streets near schools and shops，too． Most young children are taught what each of the colored lights means， so everybody can stay safe．

The first traffic signals were used for trains． The signals were put alongside railway tracks（轨道）．The color red was used to mean "stop" because it warned people of danger． A red light was also the easiest color to see from a distance． Train drivers could see the red "stop" light ahead and had enough time to slow down and stop their trains． A green light was used to mean "take care" and a white light meant "go"．

However， there were many dangerous accidents on the train tracks． Some train drivers thought a star shining in the night sky was a white light that meant"go"． So the signals were swapped． The "go" light was changed to green and the "take care" light was changed to white．

During these times， people travelled by train or in carts pulled by horses．Years later，when cars were built， people began to drive them because they could travel much faster than horses． However， the road rules for drivers were not very clear and many people were hurt crossing the roads．Yellow warning signs had to be placed beside the roads to remind drivers to take care and allow people to cross safely．

Today， towns and cities all over the world have traffic lights． Red and green lights match the signals used on the railways． Yellow lights are easy to see， so they are used to warn drivers that they should slow down and prepare to stop．

（1）Why was the color red used to mean"stop"？　　

A． It reminded people of traffic rules．

B． It helped trains run smoothly．

C． It gave people a warning of danger．

D． It was the first color people thought of．

（2）What does the underlined word "swapped" in Paragraph 3 mean？　　

A． Designed．

B． Exchanged．

C． Suggested．

D． Compared．

（3）In which order did the "take care" light develop？　　

a． A white light

b． A green light．

c． A yellow light．

A． a﹣b﹣c

B． b﹣c﹣a

C． a﹣c﹣b

D． b﹣a﹣c

（4）What is the passage mainly about？　　

A． The advantages of traffic lights．

B． The history of traffic lights．

C． The importance of traffic lights．

D． The meanings of traffic lights．

Posted by Gina at 8：32 a． m． on 11th February 2018

What do you think of the "new" hat I made for my sister？ It used to be my mum's sweater．

New uses for old clothing

Nowadays， we're more wasteful than ever﹣buying， using and throwing things away without thinking about the costs． We need to start living more responsibly﹣ but how？ One answer is to upcycle （再生利用）．

If you're like me，you might already make soil for gardening from food waste and use empty paper boxes as storage space． Did you know you can apply （应用） the same way to old clothing？ You just need imagination!

I started upcycling clothing． Making new things out of old clothes is the best way to mix my talent and my interest． Do you upcycle？ If so， what new things have you made？ If not， why not give it a try？

Terry B Posted at 9：08 a． m． on 11th February 2018

Why don't you give your old clothes to people in need？ I even give away the most expensive things I don't wear anymore． So I can help the environment while giving something useful to people in need．

Gina Posted at 9：28 a． m． on 1lth February 2018 earl

Good point! I'm talking about only the oldest clothing in your room ﹣ the clothes that are too old to be worn by others． The same idea goes for food waste at restaurants and supermarkets． Before upcycling food that can still be eaten， for example， using it to make soil， we should give it to those in need．

Betty99 Posted at 10：18 a． m． on llth February 2018

I've made shopping bags out of T﹣shirts and dog toys out of socks．

Upcycling clothing is a fun hobby， but the most important thing is that it makes me feel like I'm living less wastefully．

（1）What is special about the hat？　　

A． It came from an old sweater．

B． It was given by Gina's mum．

C． It was new and expensive．

D． It was a gift from Gina's sister．

（2）Why did Gina give a reply to TerryB？　　

A． To draw TerryB's attention．

B． To introduce a new method．

C． To further explain her idea．

D． To express her deep regret．

（3）What did Betty99 upcycle to make dog toys？　　

A． Paper boxes．

B． Shopping bags．

C． T﹣shirts．

D． Socks．

It was a summer day． An old man walked on a hill cheerfully．

He wiped the swear off his face with his left hand and kept singing songs．

Suddenly he heard someone talking to him．

"Hello． sir．"

The old man turned around but saw no one．

"I'm here．"

The voice came from beside the old man's feet， He looked down and saw a beautiful flower．

"Sir， can I ask you a question？" asked the flower．

"Of course， my child． What do you want to know？" said the old man．

The flower kept silent for a second and then said："Why are you so happy？ You don't seem to have many days left to live．"

The flower didn't wait for the old man to answer． She just kept saying， "My days have passed and I'm going to die very soon． That makes me so sad．" At this time， she began to cry．

The old man smiled．

"Yes， I don't have many days left． But， so what？"

"Why ruin（破坏） such a lovely day for something that hasn't happened？"

"What's gone is gone． What's to come is to come． You can't change them． but you can decide to enjoy this very moment that you truly have．

He didn't wait for the flower to answer．He just walked away，continuing the song he had been singing．

Slowly the flower stopped crying． As the wind was blowing softly． she swung happily．

（1）When did the story happen？

（2）Where did the voice come form？

（3）Why was the flower so sad？

（4）How did the flower felt after the old man walked away？

（5）What do you learn from the story？

We touch our faces all the time， and it had never seemed to be a big problem ﹣ until COVID 19 arrived．Touching our faces ﹣ the "T﹣zone' 'of our eye， nose and mouth ﹣ can mean giving ourselves this virus．

This is why some organizations have suggested that we should avoid touching our faces．William Sawyer， from Henry the Hand． told The Washington Post， "Just stop this simple behavior，and that would be better than any vaccine （疫苗）lever created，"

However， stopping this "simple" behavior might he harder than you think because we are used to it．

Some face﹣touching is an automatic reaction： like when there is an itch （痒） on your nose，you'll touch it again and again without thinking． A 2014 study found that touching your face also helps you to have less stress．For example． it's possible for you to do it when you feel embarrassed．According to Dacher Kelmer， a psychologist an the University of Califormia Berkeley， Us． this action may also have a social use： When you are taking to someone， for example， touching your face means you want to talk about another thing．

Besides， it's very hard to change this face touching "because you don't even kn6w you're doing it"，said Sawyer．

But you're not alone． In a 2015 study． it was found that a group of medical students touched their faces about 23 times an hour ﹣ with 44 percent of the touches in the T﹣zones" ， That was very surprising because medical students should know better．

Since it's so hard to shake the habit， maybe the easiest way is to wash our hands more often．This way， we can be sure that our hands are safe from COVID﹣19．

（1）The "T﹣zone" is formed from　　．

A． Our eyes

B． our nose and mouth

C． our eyes， nose and mouth

（2）In the second paragraph， Sawyer thinks that　　．

A． face﹣touching is simple and helpful

B． we should avoid touching our faces

C． face﹣touching may be better than vaccine

（3）Dacher Kelmer believes that　　．

A． face touching may increase stress

B． face﹣ touching may have a social use

C． face﹣touching may cause an itch on your face

（4）The last paragraph tells us to　　．

A．wash our hands more often

B． stop the habit of touching our faces

C． ask medical students not to touch their faces

（5）What is the main idea of the passage？　　

A． face﹣touching may give us COVID﹣ 19．

B． Face﹣touching may be very useful for us．

C． Stopping face touching might be harder than we think．