1. There used to be many{#blank#}1{#/blank#} (wolf)， but only a few of them remain today.

2. At present， Chinese is{#blank#}2{#/blank#} (wide) used around the world.

3. The doctor advised my father{#blank#}3{#/blank#} (not smoke) any more.

4 . We should be {#blank#}4{#/blank#} (friend) to others at any time.

5. It's reported that Chinese couples can have their{#blank#}5{#/blank#} (two) child if one of them is an only child.

    Next time you hold a book in your hands, stop and think. Like most other things in the modern world, it is the result of thousands of years of human invention.

    First, came the invention of writing,{#blank#}1{#/blank#}(probable) about 5500 year ago. With writing, people did not have to remember everything in their heads. They could communicate with people that they never {#blank#}2{#/blank#}(see) and share their knowledge with future generations.

    Later, the Greeks were well-done for their literature( 文学 ) and science, but their “books” looked very different {#blank#}3{#/blank#}the books of today. They were called scrolls(卷轴).

    They were different to use and took a lot of space in a library. About 2,000 years ago, books with lots of pages {#blank#}4{#/blank#}(invent).

    For more than a thousand years, the pages of books were made from animal skin. That changed in {#blank#}5{#/blank#}thirteenth century, when Europeans learned about a very {#blank#}6{#/blank#}(use) Chinese invention: paper.

    But the biggest change for books in Europe came in 1439, when Johannes Gutenberg invented the printing press. Before that, books in Europe were copied by hand, so they were very expensive. Many more people could afford the books {#blank#}7{#/blank#}were produced on a printing press.

    These days it is difficult {#blank#}8{#/blank#}(imagine) a world without books. But human invention does not stop. Every year, more {#blank#}9{#/blank#}(story) are bought as e-books and read on a screen.

    Will anyone turn the pages of a traditional book in the future,{#blank#}10{#/blank#}will books, like scrolls soon disappear?

    In China, there are always many interesting stories about inventions. Chopsticks are one of {#blank#}1{#/blank#}（important） inventions in Chinese history. Do you know the story behind the chopsticks? Let me tell you.

    According {#blank#}2{#/blank#}a famous story, Dayu, the Emperor of the Xia dynasty, was the person {#blank#}3{#/blank#}invented chopsticks. At that time there was a flood in China. Yu was very  {#blank#}4{#/blank#}（worry） about his people and the flood. And he tried his best {#blank#}5{#/blank#}（find） some ways to control the flood.

    One day, he was having his lunch at home  {#blank#}6{#/blank#}someone came and told him that the flood was coming again. He stopped {#blank#}7{#/blank#}（eat） and set out at once. He was hungry and wanted to pick up some meals on the table to eat {#blank#}8{#/blank#}（quick）. But the food was {#blank#}9{#/blank#}hot to pick up with hands. Then he used two branches（树枝） from a tree to pick up the food. They were the {#blank#}10{#/blank#}（one） pair of chopsticks.

    Long long ago, there was a small village in the Middle East. In the village there was {#blank#}1{#/blank#} old man called Sthira. He lived by himself. His only son had gone far away to study. Sthira's friends {#blank#}2{#/blank#} ( wonder) whether his son would return, {#blank#}3{#/blank#} Sthira always said, "Whatever happens, happens for good.＂

    One day the old man's son returned and the villagers were very happy for Sthira. He thanked the villagers and said {#blank#}4{#/blank#} (polite),"Whatever happens, happens for good.＂However, later, Sthira's son broke his {#blank#}5{#/blank#}. Once again the villagers came to visit him and once again the old man thanked {#blank#}6{#/blank#} (they) and said, "Whatever happens, happens for good."Some of the villagers were surprised {#blank#}7{#/blank#} (hear) this. Why? What was good? His son's leg got badly hurt!

    After a few days, the army came to the village and forced all the young men to {#blank#}8{#/blank#} the army. When they found his son had a {#blank#}9{#/blank#} (break) leg, they left him behind. Once again, all the villagers came to congratulate him on his {#blank#}10{#/blank#} luck. like always, the old man was still thankful to them and said.＂Whatever happens, happens for good.＂