问题
填空题
将10克含盐5%的盐水倒入40克10%的盐水中混合，混合后的含盐率是______%
答案
10×5%+40×10%，
=0.5+4，
=4.5（千克）；
4.5÷（10+40），
=4.5÷50，
=9%；
答：含盐率是9%．
故答案为：9．
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将10克含盐5%的盐水倒入40克10%的盐水中混合，混合后的含盐率是______%
10×5%+40×10%，
=0.5+4，
=4.5（千克）；
4.5÷（10+40），
=4.5÷50，
=9%；
答：含盐率是9%．
故答案为：9．
I sat next to my close friend，Tina，in my history class．Our teacher，Miss Turner announced a new 11 ．We were to create a 12 about cultures．As required，we wrote the names of two friends we wanted in our group．Miss Turner informed us that she would 13 our choices and let us know the result．I had no 14 that I would work with Tina because I knew we had chosen each other． The next day，I waited anxiously when Miss Turner started to call out 1 5．When she reached group three，Tina was called． 16 ，my name was not included．“There must have been some 17 ！"I thought to myself． Than I heard 18 .The last group with Mauro and Karina! How 19 ! How could I face being in that group—the boy who hardly spoke English and the girl who wore 20 clothes a11 the time? I went to Miss Turner to 21 I should be in a “good” group．She gently placed a hand on my shoulder．“I know what you want，Rachael，”she said，but your group 22 you more．Only you can help them get an ideal 23 ．Will you help them?" I 24 walked to where the others in my group sat. Halfway through the week, I 25 myself enjoying working with my partners．There was no need to 26 —I grew sincerely interested in learning something about then. Mauro, I found out, was 27 with English after he came to this country. Karina wanted to be a fashion designer and she had a lot of 28 ideas．They were the ones no one cared enough about to try to understand—except Miss Turner． Miss Turner gave us an A on that newspaper. But I think she is the one who truly 29 it. I really 30 that Miss Turner gave me a chance to see other people in a new light.
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