问题
解答题
| 计算： （1）23×(-5)-(-3)÷
（2）-72-5×（-2）3+10÷（1-2）10 |
答案
（1）原式=-23×5+3÷3 128
=-115+3×128 3
=-115+128
=13；
（2）原式=-49+5×8+10÷1=1．
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| 计算： （1）23×(-5)-(-3)÷
（2）-72-5×（-2）3+10÷（1-2）10 |
（1）原式=-23×5+3÷3 128
=-115+3×128 3
=-115+128
=13；
（2）原式=-49+5×8+10÷1=1．
| 完形填空。 What do you do at the weekend? Some people like to 1 at home, but others like to go 2 a walk or play football. My friend Jack works hard in a factory during(在……期间) the 3 . At the weekend, he always 4 the same things. On Saturday he 5 his car and on 6 he goes with his family to a village by car. His uncle and aunt have a farm there. It isn't a 7 one but there's always 8 to do on the farm. The children help with the animals and give them their 9 . Jack and his wife help in the fields(田地). At the end of the day, they are all 10 and Jack's aunt gives them a big meal. | ||||
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