题目

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There have been many great inventions that changed the way we live.The f______great invention was one that is still very i_____
today--wheel.This made it e______to carry heavy things and to
travel long distance.For hundreds of years after that there were
f_____inventions that as important as the wheel.Then in the early
1800's the world started to c______.There was l_____unknown land left in the world.People didn't have to e______much any more.They
began to work instead to mke life b______.In the secord half of
the 19th c_____ many great inventions were made.Among them were
camera,the electric light and the radio.These all become a big
p______of our life today.
谢谢`````!

提问时间：2020-11-01

答案

first
important
easy
few
change
little
explore
better
century
part