题目内容

排列45321的逆序数为。

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1) The Internet has good effects on children’s lives. For example, the Internet has opened the world for everyone; we are 1.______ to the world; we can learn about the events that are happening far away; we can all be part of a 2._ 3.____ now.

2) The Internet is also a great 1._ for children’s education. They can find 2._ they need for their schoolwork from the Internet, and they don’t have to go to 3._ 4.______ to get this information.

3) The Internet is not the enemy; it is a 1.____ to a big, 2._ 3.______.

煤粉具有易流动性。

A. 对
B. 错