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A
B
__ compass__ It was a great gift to the world from
ancient China. Before it was invented, sailors had to
depend on the star to find the right direction. After
it was invented, the oceans were open to sail. And
many discoveries were made with its help.
1a Fill in the blanks with the names of the Four Great Inventions.
1a Fill in the blanks with the names of the Four Great Inventions.
_ gunpowder _ It is one of the greatest inventions. It is
said that in the 3rd century a Chinese man wrote
about how to make it. At first, it was used for making
fireworks. At the end of the Tang dynasty, people
began to use it in wars. The method of making it was
brought to the Arab world and Europe in the 13th and
14th centuries.
Fill in the blanks with the names of the Four Great Inventions.
__ paper-making_ Before it was invented, the ancient
Chinese carved characters on animal bones and stones. China was the first country in the world to make it. During the Western Han dynasty, it was made in some places in China, and was developed in the Eastern Han dynasty by Cai Lun. He made it with
bark, ropes and rags.
Fill in the blanks with the names of the Four Great Inventions.
__Printing__ It was developed in the Song dynasty by Bi Sheng. He carved characters on pieces of clay or wood, and then brushed ink on them. After the characters were printed on paper, the pieces of clay or wood could be used again. Later this technology spread to Korea, Japan and Europe. It was the basic method used at that time.
One : describe the invention
The other one : tell the name of the invention
Others: keep it a secret.
Evert pair gets 1.5 minutes.
If you don’t know how to describe, you can say “pass”
gun powder
calculator
refrigerator