问题
填空题
现在给出1、2、3、…、11、12这12个数，在其中某些数前面添加负号后，使这12个数的和为0，写出一个你认为正确的式子（ ）．
答案
1﹣2﹣3+4+5﹣6﹣7+8+9﹣10﹣11+12
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现在给出1、2、3、…、11、12这12个数，在其中某些数前面添加负号后，使这12个数的和为0，写出一个你认为正确的式子（ ）．
1﹣2﹣3+4+5﹣6﹣7+8+9﹣10﹣11+12
| 完形填空。 | ||||
| Look! This is a picture of Mr. Green's family. In the 1 , we can see Mr. Green, Mrs. Green, their son Alan and their 2 Lucy. Mr. Green is sitting in a 3 . He is watching a TV show. He is a policeman and he 4 very hard. Mrs. Green is doing housework. She is a 5 and she works in a 6 . Alan is a middle school student. He is playing the guitar. Look at the little girl. She is playing 7 her toys on the floor. She is Lucy. She is very 8 so she doesn't go to school. 9 is that behind Lucy? It is a cat. What's the cat 10 ? It's sleeping. | ||||
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