So far, China Eastern Airlines    1    (receive) approval(批准)fiom the Ministry oflndustry and Information Technology to offer in- flight Wi-Fi service on 21 airplanes.

The carrier becomes China's first airline company    2    （provide) Wi-Fi service for both domestic and international flights. Passengers    3    (leave) for New York, Los Angeles, San Francisco, Toronto, Beijing and Guangzhou will have access    4    me Wi-Fi service through a telecommunication satellite.

The flights will begin to provide the service in one month after operational    5    （prepare). The Wi-Fi service will be free in the 21 airplanes at the beginning,    6    a charge list is now under discussion.

The company plans to put in Wi-Fi service    7    (equip) in all airplanes by 2019-2020. Other carriers in China, such as Air China and Hainan Airlines also have been following this attempt in some oftheir flights during the past few years.

Industry experts note that    8    approval for the Wi-Fi service on 21 airplanes.is a trial for commercial in-flight Internet service operations in China. Aviation(航空)business staff say that China has the potential to become the world's     9    (large) aviation market,    10    is likely to create tens of billions of yuan in profit in the aviation Internet business.

China has once again proved its     1     (able) to change the world with the “new four great inventions”: high-speed railways, electronic payments, shared bicycles and online shopping. They’re related to China’s high-tech innovation (创新),     2     has improved the quality of people’s lives, according to a survey     3     (make) by the Belt and Road Research Institute of Beijing Foreign Studies University.

“My wallet is no longer in use. I can buy and eat whatever I want simply with a fingertip on my phone,” said     4     university student, adding that “even pancake sellers are using mobile payment”.

The bikes     5     (them) are not new, but the operating model of bike-sharing     6     (base) on satellite navigation system, mobile payment, big data and other high technologies.

China has entered a new innovative era, thanks to the large amounts of capital China has invested in     7     (encourage) innovation, said Bernhard Schwartlander, WHO Representative in China.

It is increasingly clear that China is innovating and no longer copying Western ideas. This is especially true in mobile, where China is leading     8     many ways such as…social messaging app WeChat, she said. This is partly     9     China skipped over the PC era and went directly to mobile. China has a     10     (large) mobile use than any other country in the world.

English is now the first language of about 400 million people, the mother language of 12 countries and the official language of one-fifth of the land area of the world,    1    means one    2    every seven people in the world speaks English.

More and more people have found it important    3    (learn) English well in recent years. In Italy, for example, English is a must for many technical jobs. In China, English is the    4    (important) foreign language that is learned at school.

The English language has never stopped changing. It always borrows words and phrases from other cultures to enlarge    5    (it) vocabulary.    6    (actual), modern English is quite different from what    7    (use) hundreds of years ago.

English is so widely used that it has become the standard language for    8    (communicate) internationally. About 75% of the world’s mail    9    (be) in English. About 60% of the world’s telephone calls are made in English and about 60% of the world’s radio programs are broadcast in English. What’s more, over half of the world’s books and magazines are written in English. In    10    word, English is now the world’s first language.

During the     1     (twenty) century , the temperature of the earth     2     (rise) about one degree Fahrenheit. It is a rapid increase when compared    3     other natural changes .

There is no doubt    4    the earth is becoming warmer. Scientists believe     5     is human activity that has caused this global warming. The increase in the earth's temperature is due to the    6     (burn) of fossil fuels. Some byproducts of this process     7     (call) “greenhouse” gases, the most important one of    8    is carbon dioxide. Without the “greenhouse effect”, the earth would be thirty-three degree Celsius    9     (cool) than it is. So, we need those gases. The problem begins when we add huge quantities of extra carbon dioxide into the atmosphere, causing the global temperature     10     (go) up.