| （1）-（+4）-（-5） （2）(-2)3×8-8×(
（3）(
（4）-12+[20-（-2）3]÷（-4） |
（1）原式=-4+5=1；
（2）原式=-8×8-8×
+8×8=-64-1+64=-1；1 8
（3）原式=（
-3 4
+5 6
）×（-36）=-27+30-21=-18；7 12
（4）原式=-1+（20+8）÷（-4）=-1-7=-8．
| An old farmer lived on a farm in the mountains with his young grandson. Each morning Grandpa was up early sitting at the kitchen table 1 his book. His grandson wanted to be just like him and tried to 2 him in every way he could. One day the grandson asked, "Grandpa! I try to read that book just like you do, 3 I don't understand it, and what I do understand I 4 as soon as I close the book. What 5 does reading the book do?" The grandfather quietly turned from putting coal in the stove and replied, "Take this coal basket down to the river and bring me back a basket of 6 ." The boy did as he was told, but all the water 7 before he got back to the house. The grandfather laughed and said, "You'll have to move a little more 8 next time." Then he sent the boy back to the river with the basket to try 9 . This time the boy ran faster, but again the basket was 10 before he returned home. 11 , he told his grandfather that it was 12 to carry water in a basket, and he went to get a bucket 13 . The old man said, "I don't want a 14 of water; I want a basket of water. You're just not trying hard enough." 15 he went out of the door to watch the boy try again. The boy again dipped the basket into the river and ran as hard as he could, but when he 16 his grandfather the basket was again empty. Out of breath, he said, "See, Grandpa, it's useless!" "So you think it is useless?" the old man said, "Look at the basket." The boy looked at the basket and for the first time realized that the basket was 17 . Instead  of adirty old coal basket, it was 18 , inside and out. "Son, that's what 19 when you read the book. You might not understand or remember everything, but when you read it, you will be 20 , inside and out." | ||||
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