______÷(12x2y3)2=3x2y．_爱下问搜题

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问题填空题

______÷(

1

2

x2y3)2=3x2y．

答案

由题意，可知所求式子为：3x²y•（

1

2

x²y³）²

=3x²y•

1

4

x⁴y⁶

=

3

4

x⁶y⁷．

故答案为

3

4

x⁶y⁷．

完形填空

Whenever the sun dropped and the blue sky came up, my father and I used to climb the mountain near my house. Walking together, my father and I used to have a lot of __1__ through which I learned __2__ from his experiences. He always told me, “ You __3__ have goals (目标) like climbing the mountain.” Without the mountain-climbing that we both __4__, we couldn’t have enough time to spend together because my father was very _5__. I really got a lot from the mountain-climbing. It gave me time to _6__ with my father and to be in deep thought __7__ develop my patience.
Once we climbed a very high mountain. It was so challenging for me _8__ I was only ten years old. During the first few hours of climbing, I enjoyed the flowers and trees, and the bird’s singing. But as time passed, I got a pain in both of my __9__. I wanted to __10_ climbing, but my father said to me, “You can always see a beautiful sky at the top of the mountain, but you can’t see it __11__ reaching the top. Only there can you see all of the nice things, which is just like your life.”
At that time, I was too young to understand his __12__. But later after that, I __13__ know the meaning of hope in life. I found __14__ standing at the top of the mountain, and the sky was as _15_ as crystal.

A．conversations

C．conclusions

D．expressions

单项选择题

关于勤劳节俭的论述中，正确的选项是（）。

A、勤劳一定能使人致富

B、勤劳节俭有利于企业持续发展

C、新时代需要创造，不需要节俭

D、新时代需要巧干，不需要勤劳