3 . Man’s best friend is also his oldest. The partnership between dogs and people may go back as much as 40,000 years long predating any other domestication （驯化）. And it is based not, as is the case with many succeeding domestications, on a human desire to eat the animal concerned, or to consume some associated product such as milk or eggs, but rather on sincere companionship, though with a little work — and hunting-related using on the side.

How this partnership got going, though, is debated. In particular, unlike other domestications, which involved groups of people who had taken up farming, the domestication of the wolves that became dogs happened while all human beings were still hunter-gatherers. The two species were, in other words, competitors. Yet they managed to become soul mates.

One popular theory is that the wolves which became dogs acted as rubbish cleaners for groups of people, by eating their waste, possibly including their faeces （粪 便）.That, though, would be a service more useful to settled farmers than mobile hunter-gatherers. As she writes in Scientific Reports, however, Maria Lahtinen of the Finnish Museum of Natural History thinks she might have the answer as to how wolves and people squared the competitive circle while both species were still hunters. It was, she and her colleagues suggest, simply a matter of remaining calories.

The archaeological （考古的）evidence suggests that wolves were domesticated in wood lands at the edge of the ice sheets of the last ice age, since that is where almost all Palaeolithic dog remains have been found. Dr Lahtinen calculates that, given the large size of hunted animals in this environment, and humans' need to eat a balanced diet with plenty of plant matter in it as well as flesh, there would have been a lot of remaining meat around from kills. What better way to use some of it than to feed a few wolf cubs （幼崽）to provide entertainment and companionship? And thus, she suggests, were dogs born.

1. Why did our ancestors domesticate dogs?

A．To balance their diet.	B．To help them to farm.
C．To get rid of rubbish.	D．To develop a partnership.

2. What can be inferred according to Dr Lahtinen?

A．Dogs were born as early as wolves.

B．People ever hunted wolves for food.

C．Wolf cubs were raised for remaining meat.

D．Cruel enemies could become good friends.

3. What does the article present us about how dogs were domesticated?

A．A new idea.	B．Some evidence.
C．A practical way.	D．A scientific report.

4. In what column of a magazine can you find more articles like this one?

A．Home & Life.	B．Finance & Economy.
C．History & Future.	D．Science & Technology.

4 . 阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。

Martial Arts had its origins in the Shang and Zhou Dynasties. During the following Qin and Han Dynasties, wrestling, swordplay and spear skills became well developed and were popular among civilians and troops. In the Song Dynasty, various schools, boxing styles, movement sets    1    weapon skills flourished. We recognize Martial Arts    2    Gong Fu or Wushu today, which has many followers worldwide.

Martial Arts is a series of fighting styles    3    has developed over a long historical period in China. Nowadays, it     4    （regard） as a traditional sport gaining more and more    5    （popular） and even stands as a representative for Chinese culture. Styles including Shaolin, Tai Chi and Qigong have many followers worldwide. Some westerners think that all Chinese people are Gong Fu masters. That's not true, but this traditional heritage （遗产）has    6    （it） unique existence in modern times and left much influence on the locals' lifestyle.

Although being fighting styles, Gong Fu    7    （advocate） virtue and peace, not aggression or violence. This has been the common value    8    （encourage） by martial artists from generation to generation. With a number of movement sets, boxing styles, weapon skills and some fighting touches , Gong Fu keeps the    9    （origin） function of self-defense. Now the value in body-building and fitness is also     10    （high） appreciated.

5 . August is one of the most popular months to travel for Chinese. Choosing the perfect destination for an August vacation isn't easy. We looked at airfare trends, climate data, and cultural calendars to select 4 vacation spots that are some of the best places to visit this August.

Mackinac Island, Michigan

Visitors can enjoy the sunny weather while boating, fishing, and sailing. On land, you can hop between historic sites like Fort Mackinac and Fort Holmes, both key sites in the War of 1812.

And sweet teeth will have something to celebrate too: the Fudge（软糖） Festival, which takes place every August and allows the many fudge shops on the island to show off their best work.

Martha's Vineyard, Massachusetts

Martha's Vineyard is praised as one of the most classic summer getaways in the United States.

The charming island south of Cape Cod is dotted with simple and elegant New England homes, relaxing sandy beaches. The sunny summer weather in August sets the perfect stage for a boat outing or a shopping trip to the town's shops of all kinds.

Krakow, Poland

Krakow, Poland, is the perfect mixture of history and nightlife.

Tourist favorites in Krakow include Wawel Cathedral, St. Mary's Basilica, and the Schindler's Factory museum, each of which gives a glance into Poland's religious and political history. After the sun sets, enjoy Krakow's world——famous bar and restaurant scene, and don't forget to pop into a cafe for a late-night snack.

Maasai Mara National Reserve, Kenya

Every year, one of the grandest wonders in nature is performed here—the Great Migration.

The annual migration sees more than 2 million wildebeest(羚羊), zebras make the dangerous journey across the Serengeti in search of greener fields. Along the way, predators(食肉动物) such as lions and crocodiles lie in wait for the incoming foods, providing tense scene for brave sightseers and nature lovers.

1. What do you enjoy when you go to Krakow?

A．Boating.	B．Bars and restaurants.
C．The Fudge Festival.	D．The Great Migration.

2. If you are a nature lover, which place do you prefer to travel?

A．Mackinac Island.	B．Martha's Vineyard.
C．Krakow.	D．Maasai Mara National Reserve.

3. What do these four tourist destinations have in common?

A．They are some of the best places to visit this August for Chinese.

B．The total cost of going to these places is roughly the same.

C．They all have historical scenes to visit.

D．They are all the favorite seaside of tourists.

6 . There has been a lot of publicity recently surrounding 5G, the next generation of wireless technology for the world. But what is this technology and how might it change our lives?

5G stands for fifth generation, meaning the next step in the progression of technology to replace the current 4G system. 4G was the replacement for 3G, which came after 2G, and so on. Earlier "G" systems were designed to improve mobile communication operations. Each new technology brought major improvements in speed and greatly increased network capacity（容量）. The new 5G system promises more of the same. However, technology experts say there is a major way that 5G is different than the earlier systems. It will move well beyond mobile network technology to affect many more devices and industries than other "G" versions.

Wireless industry groups say 5G will help fuel future "smart cities" by connecting sensor（传感器） networks. 5G is also expected to connect self-driving cars and support new technologies involving virtual reality. Higher 5G speeds could also permit doctors to commonly perform remote medical operations. Factories and businesses could use 5G technology to increase automation and improve the collection of information.

Every coin has two sides.   Much of the data could contain private details about individuals, businesses or government organizations. The increased data flow would give internet attackers a lot more possibilities to steal and misuse data. In addition, the wider use of a 5G wireless network means any breakdown of the system would have more widespread and severe results. Such difficulties could affect public safety as well as world economic activity.

1. What is the significant difference between 5G and the early “G” systems?

A．It will affect more devices and industries.

B．It will change the way people communicate.

C．It will reform the pattern of information system.

D．It will improve internet speed and network capacity.

2. What can we learn about "smart cities" from the passage?

A．Smart city is a city full of intelligent people.

B．Now many smart cities have been built all over the world.

C．As long as there is a wireless network, you can build a smart city.

D．The development of 5G accelerates the construction of smart cities.

3. Why can 5G allow doctors to perform long-range medical operations?

A．Because of the low cost of 5G.

B．Because of the wide range of 5G.

C．Because of the high speed of 5G.

D．Because of the ability of 5G to collect information.

4. What is the last paragraph mainly about?

A．Possible risks of 5G technology.

B．The advantages of 5G technology.

C．The influence of 5G technology on the world.

D．The importance of information security in the 5G era.

7 . A Welcome Gift

Dario and his mother loved their new apartment. The living room was large enough for their piano. That night, the two of them _______ side by side at the piano. They played jazz music to celebrate their new home. The loud _______ filled the room and made them feel very happy.

The next morning, _______, their happiness disappeared. Someone had left a _______ under their door during the night. One of their neighbors had written to complain about the sound of the piano. Dario’s mother asked the building superintendent(管理员) if he knew anything about it. But he said that they were all _______ people and he couldn’t imagine any of them had done that. Later that morning, Dario suggested that they write a letter to their _______ and apologize for their playing.

“Maybe we could go and _______ everyone in person.” his mother said.

“What if we invited them to come here for a _______ instead?” Dario asked.

They both loved the _______. Over the next few days, they sent out invitations and prepared desserts __________ their guests. They decorated the apartment with streamers(彩带) and party lights.

Finally, the day of the party __________. Some guests brought presents. Others brought flowers. Some even brought desserts to __________. One woman, Mrs. Gilbert, __________ Dario’s mother with a book of piano music by Chopin.

“I heard you playing the other night,” she said. “The sounds woke me out of bed. I __________ that you might play like this every night. So I wrote a short note. I hope you don’t think I disliked the playing.”

Dario’s mother smiled at Mrs. Gilbert. “I think maybe we __________ you an apology.” she said. “I didn’t __________ how late it was when we were playing. Maybe we should play some quieter music at night.”

“You play, you play!” Mrs. Gilbert said. “I like what you play! Just not so loud at night.” She pointed to the book she had given them. “These songs are not such __________ music.”

“These songs are beautiful music.” Dario’s mother said. “We will be __________ to play them in the evening.”

“And we won’t play so loud or late!” Dario said. He was already looking forward to __________ the new music. More than that, however, he was happy to see the big smile on his mother’s face. It gave him a feeling of __________ and made him feel that they were home at last.

1.

A．sat

B．stood

C．lay

D．walked

2.

A．voice

B．ring

C．music

D．cry

3.

A．therefore

B．however

C．otherwise

D．instead

4.

A．note

B．poster

C．bill

D．report

5.

A．proud

B．rich

C．lucky

D．nice

6.

A．neighbors

B．friends

C．relatives

D．audience

7.

A．blame

B．instruct

C．question

D．visit

8.

A．party

B．concert

C．show

D．play

9.

A．experience

B．idea

C．performance

D．action

10.

A．to

B．with

C．for

D．from

11.

A．continued

B．arrived

C．passed

D．finished

12.

A．order

B．sell

C．share

D．advertise

13.

A．treated

B．presented

C．helped

D．served

14.

A．promised

B．admitted

C．agreed

D．worried

15.

A．give

B．send

C．offer

D．owe

16.

A．realize

B．remember

C．understand

D．accept

17.

A．sweet

B．strange

C．funny

D．loud

18.

A．brave

B．sorry

C．happy

D．afraid

19.

A．changing

B．practicing

C．recording

D．writing

20.

A．equality

B．freedom

C．warmth

D．sympathy