China once again proved its     1    (able) to change the world with the “four great new inventions” : high-speed railway, electronic payments , shared bicycles and online shopping. They are 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 a research center.

“My wallet is no longer in use. I can buy and eat whatever I want with a finger tip on my phone,” said     4     university student.

The bikes themselves are not new, but the operating model is based on the satellite navigation system (卫星导航) and other high     5    (technology).

“China     6    (development very fast in the last few years as the government has spent much money in encouraging innovation,” said a foreigner     7    (live) in China.

It is true that China is a leading country     8     many ways. This is because China skipped (跳跃) over the PC age and went     9    (direct) into the mobile age. China has a     10    (large) mobile use than any other country in the world.

Strange things were     1     (happen) in the countryside of northeast Hebei. For three days the water in the village wells     2     (rise) and fell. Farmers noticed that the well walls had deep cracks in     3     (they). A smelly gas came out of the cracks. In the farmyards, the chickens and even the pigs were too nervous     4     (eat). Mice ran out of the field     5     (look) for places to hide. Fish jumped out of their bowls and ponds.     6     about 3:00 am on July 28^th, 1976, some people saw     7     (brightly) lights in the sky. The sound of planes could     8     (hear) outside the city of Tangshan even when no planes were in the sky. In the city, the water pipes in some buildings cracked and burst.     9     the one million people of the city,     10     thought little of these events, were asleep as usual that night.