Have you ever wondered why birds sing? Maybe you thought that they were just happy. After all，you probably sing or whistle when you are happy.
Some scientists believe that birds do sing some of the time just because they are happy. However，they sing most of the time for a very different reason. Their singing is actually a warning to other birds to stay out of their territory.
Do you know what a ’territory’ is? A territory is an area that an animal，usually the male，claims(声称)as its own. Only he and his family are welcome there. No other families of the same kind are welcome. Your garden and house are your territory where only your family and friends are welcome. If a stranger should enter your territory and threaten(威胁)you，you might shout. Probably this would be enough to frighten him away.
If so，you have actually scared the stranger away without having to fight him. A bird does the same thing. But he expects an outsider almost any time，especially at nesting(筑巢)season. So he is screaming all the time，whether he can see an outsider or not. This screaming is what we call a bird’s song，and it is usually enough to keep an outsider away.
Birds sing loudest in the spring when they are trying to attract a mate and warn others not to enter the territory of theirs..
You can see that birds have a language of their own. Most of it has to do with attracting mates and setting up territories. Some scientists believe that most of the time bird’s singing is actually _______.
| A．away of warning | B．an expression of happiness |
| C．an expression of anger | D．away of greeting |
What is a bird’s "territory"?.
| A．A place where families of other kinds are not accepted. |
| B．A place where a bird may shut at the top of its voice |
| C．An area for which birds fight against each other. |
| D．An area which a bird considers to be its own. |
Why do birds keep on singing at nesting season?
| A．Because they want to invite more friends. |
| B．Because they want to find outsiders around. |
| C．Because their singing helps frighten outsiders away. |
| D．Because their singing helps remove their fears. |
How does the writer explain bird’s singing?
| A．By comparing birds with human beings. | B．By reporting experiment results. |
| C．By describing birds’ daily life. | D．By telling a bird’s story. |
It is generally accepted that Beijing Opera appeared after 1790 when the famous four Anhui opera groups came to Beijing． Its music and singing come from Xipi and Erhuang in Anhui and Hubei． Its clothes are all beautiful and artistic． Different actors wear different kinds of costumes． It is the highest expression of the Chinese culture． Beijing Opera is full of famous stories， beautiful facial paintings， and wonderful fighting． This kind of opera is very popular with Chinese people． And now more and more young people like it． Many children learned to sing Beijing Opera when they were very young．
Stories in Beijing Opera are very interesting． Some of them are from the history books， but most are from the literature （文学）and famous novels． The people in the story usually have some disagreements． They become angry and unhappy． They are sad and lonely． Sometimes they are nervous and worried， and then they find a way to make peace． The stories usually end with happiness and people are all happy in the end．
（1）Beijing Opera appeared ．
| A． |
before the famous four Anhui opera groups came to Beijing |
| B． |
after the famous four Anhui opera groups came to Beijing |
| C． |
before 1790 |
| D． |
in 1790 |
（2）The music and singing of Beijing Opera come from ．
| A． |
popular music in Hong Kong |
B． |
|
| C． |
Western music in the U． |
D． | |
| E． |
country music in the U．S． |
F． |
|
| G． |
Xipi and Erhuang in Anhui and Hubei |
H． |
|
（3）Some of the stories in Beijing Opera are from ．
| A． |
history books |
| B． |
newspapers |
| C． |
magazines |
| D． |
e﹣books |
（4）When you watch Beijing Opera， you can enjoy many things EXCEPT ．
| A． |
music and singing |
| B． |
facial paintings |
| C． |
wonderful fighting |
| D． |
famous novels |
（5）The people in the stories of Beijing Opera usually have endings．
| A． |
unhappy |
| B． |
bad |
| C． |
sad |
| D． |
good |
（1）The Yard Sale is held for ．
| A． |
raising money to fight against cancer |
| B． |
helping with the children's education |
| C． |
selling some printers， cell phones， cameras and so on |
| D． |
making some money to help Performing Arts Camp |
（2）Grace Lutheran School can help your children in ．
| A． |
reading and dancing |
| B． |
music and math |
| C． |
reading and math |
| D． |
dancing and music |
（3）If you want to buy a computer， you should ．
| A． |
call 773﹣637﹣2250 |
| B． |
call 02﹣1203﹣6688 |
| C． |
pay a visit to Hedley Village |
| D． |
pay a visit to 77 Norgrove Crescent， Toronto |
（4）Some of the performing arts classes will begin on except ．
| A． |
July 23 |
| B． |
August 2 |
| C． |
January 22 |
| D． |
August 14 |
（5）Which of the following sentences is TRUE according to the passage？
| A． |
State Theater Performing Arts Camp provides meals for free． |
| B． |
You can come to Jiahe Store for Holiday Sales． |
| C． |
Grace Lutheran School will accept a student at the age of 19． |
| D． |
Yard Sale begins at 6：30 a． m． |
Kids love to run here，there and everywhere．But as we age，we seem to lose the enjoyment of running．This form of exercise，though，offers great benefits（好处）to everyone．It helps with weight control，and it slows down the effects of aging．It helps us relax and increase confidence．Running keeps the heart healthy and muscles and bones strong．It reduces the risk of heart diseases．In addition to health，running has other benefits．You can run almost anywhere：You don't need a gym membership or expensive equipment（器械）．For that reason and others，running is a favourite form of exercise for many people．
If you want to run，how can you get started？It is not wise to start exercising when you are not feeling well．If you haven't exercised in awhile，you should check with your doctor．He or she will let you know if you're healthy enough to try running．If your doctor says OK，you're ready to go！
What's next？
Choose a good pair of running shoes．They don't need to be expensive；they just need to give your feet good support（支撑）．
Find a running partner．On days when you don't feel like exercising，he or she can help encourage you．If you can't find anyone who enjoys running，take your dog along．It is always ready to go outside，and the exercise makes it healthier，too．
Pay attention while you are running ． Be careful with the traffic and run facing the cars coming towards you．Don't wear headphones while running outside．They stop you from hearing cars，stray dogs（流浪狗），etc．Wear bright clothing in order to be seen easily．
If you're ready to start，why not take part in the next"Let's Run"？The event is to raise money for the children and parents in need．It's a great way to experience the pleasure of running while giving a helping hand to the poor．
（1）What are the advantages of running？（Give two examples）
（2）What should you do first before you try running？
（3）What kind of shoes is good for running？
（4）According to the passage，how can you avoid feeling bored with running？
（5）What sentence can be put on the line？
（6）Now you've finished the P．E．exam，will you keep running？Why or why not？
=If you look at the top of your phone，you'll usually see a little symbol that says 3G or 4G． The"G"stands for the"generation"of your mobile network．But these symbols will become things of the past after 5G fully arrives．
On March 30th，2019，Shanghai vice﹣mayor Wu Qing made the first 5G video call on a Huawei Mate X smartphone，CGTN reported．Shanghai has also become the first city in China to start testing 5G networks．
Now，4G takes about 100 to 200 milliseconds（毫秒）to send and receive data（数据）．But 5G will get it down to 1 millisecond or less．This big change will not only make our mobile Internet faster．It can be used in many other ways as well．
For example，5G will help to make self﹣driving cars safer．Today's self﹣driving test cars have one problem﹣ lag．When the car"sees"an obstacle（障碍物），it sends this information to a data center and receives instructions．However，it takes time to send and receive this information．With this kind of lag，the cars might crash（撞击）because they don't receive instructions in time．With 5G，this lag will be greatly lowered，making the cars safer，according to CNN．
5G could also be used to power the Internet of Things（IOT）．This refers to a large online network that connects all things and people．Fast Internet speeds will be the key to developing this technology．For example，with IOT under 5G，your refrigerator could automatically（自动地）place an order online for eggs when it finds that there are no eggs left inside．
All in all，5G will shape every type of technology that it touches．And you won't have to wait too long for that to happen．
（1）From Paragraph ②，we can know that ．
| A． |
5G is widely used in Shanghai |
| B． |
it took lots of efforts to test 5G |
| C． |
China is working on its 5G networks |
| D． |
5G would make it possible to take videos |
（2）Compared with 4G，5G could be ．
| A． |
cheaper |
| B． |
faster |
| C． |
safer |
| D． |
busier |
（3）The underlined word"lag"probably means" "in Chinese．
| A． |
延迟 |
| B． |
迷路 |
| C． |
暂停 |
| D． |
耗电 |
（4）The refrigerator is mentioned to ．
| A． |
describe the importance of IOT |
| B． |
encourage people to try the new product |
| C． |
introduce how to use the Internet of Things |
| D． |
show 5G would make IOT more powerful |
（5）Which of the following would be the best title of the passage？
| A． |
Can 5G Go Far？ |
| B． |
How is 5G Changing Our Life？ |
| C． |
5G is on the Way |
| D． |
China is Leading the World in 5G |
I loved everything about school except for one person：Mildred．
Every day，as we walked home after school，she would step on the backs of my shoes．Then，when I stopped to put my shoes on，Mildred would hit 6me on the back quickly and run away．She scared（惊吓）me．
Soon，my mother found something was wrong．I told her the whole story．My mum told me not to worry and said she had a plan．
The next morning，my mum walked up the hill with me．Just as we got to the top of the hill，we saw Mildred．
"Hello，Mildred，"my mum said quietly．Mildred stopped，standing still． Her hands and face were bright red．Her oversized coat hung open．There were only two buttons（纽扣）on it．
My mother didn't say anything at first．Instead，she buttoned up Mildred's coat and turned the collar（衣领）up around her neck．
"I'm Amy's mother．I need your help，Mildred．"My mother's hands held Mildred's as she spoke．"Amy doesn't have any brothers or sisters．She needs a good friend at school，someone to walk up the hill with her after classes are over．Would you be Amy's friend，Mildred？"
Mildred chewed（咬住）on her bottom lip（嘴唇）and nodded．"Oh，thank you！"my mother said．"I just know you are someone I can depend on．"Then she hugged us and left as though nothing unusual had happened．
Mildred and I walked on to school．As I looked over at her，I saw that Mildred was smiling！I'd never seen her smile before．
We walked up the hill each day after school together and pretty soon we became good friends．
I didn't understand my mum's plan at that time．But finally，I came to understand her message：Love never fails．
（1）What made Amy worried about school？
| A． |
Poor grades． |
| B． |
No clean shoes． |
| C． |
No good friends． |
| D． |
Someone unfriendly． |
（2）After greeting Mildred，Amy's mum ．
| A． |
gave her a loving hug |
| B． |
asked her for help directly |
| C． |
held her hands warmly |
| D． |
helped her to dress properly |
（3）Mildred smiled probably because ．
| A． |
Amy and her mum apologised to her |
| B． |
she felt the touch of love and trust |
| C． |
Amy agreed to make friends with her |
| D． |
she wasn't punished so badly as she imagined |
（4）What does the story mainly tell us？
| A． |
Love is always full of magic． |
| B． |
True love never disappears． |
| C． |
A mother's love is always there． |
| D． |
It's never late to share your love． |
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