问题
填空题
在5：3=15：9比例中，如果内项3增加3，外项5应该增加（ ）。
答案
5
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在5：3=15：9比例中，如果内项3增加3，外项5应该增加（ ）。
5
| 根据短文内容，用方框中所给单词填空，每词限用一次。 | |
important and 2 to us? Because they can help us do things faster and 3 . A washing machine helps us to wash clothes. A printing machine helps us to 4 a lot of books, newspapers, magazines and many 5 things quickly. Bicycles, cars, trains and planes are all 6 , too. They help us to travel faster than on foot. The computer is a wonderful machine. It was 7 not long ago. It not only stores information but also computes numbers millions of times as 8 as a scientist does. Let's study hard and try to use all 9 of machines. I think we can build China into a 10 country in the future. |