问题
填空题
金属的力学性能是指（）时表现出来的性能，包括（）；（）；（）和韧性及疲劳强度等。
答案
参考答案：金属在外力作用；强度；硬度；塑性
搜题请搜索小程序“爱下问搜题”
金属的力学性能是指（）时表现出来的性能，包括（）；（）；（）和韧性及疲劳强度等。
参考答案：金属在外力作用；强度；硬度；塑性
| 完形填空。 | ||||
| My son Joey was born with club (弯曲的 ) feet. The doctors assured us that with 1 he would be able to walk normally-but would never 2 very well. The first three years of his life were spent in surgery, casts and braces. By the time he was eight,you wouldn't know he had a problem when you saw him walk. The children in our 3 ran around as most children do during play,and Joey would jump right in and run and 4 , too. We never told him that he 5 wouldn't be able to run as well as the other children. So he didn't know. In 6 grade he decided to go out for the cross-country team. Every day he trained with the team. He worked harder and ran more than 7 of the others-perhaps he 8 that the abilities that seemed to come naturally to so many others did not come 9 to him. 10 the entire team runs, 11 the top seven runners have the potential to score points for the school. We didn't tell him he probably would never make the team,so he didn't 12 . He 13 to run four to five miles a day,every day-even the day he had a 103-degree fever. I was 14 , so I went to look for him after school. I found him running 15 . I asked him how he felt. " Okay,"he said. He had two more miles to go. The 16 ran down his face and his eyes were glassy from his fever. Yet he looked straight 17 and kept running. We never told him he couldn't run with a 103-degree fever. So he didn't know. Two weeks later,the names of the team runners were 18 . Joey numbered six on the list. Joey had 19 the team. He was in seventh grade-the other six team members were all eighth graders. We never told him he 20 expect to make the team. We never told him he couldn't. We never told him he couldn't do it so he didn't know. He just did it. | ||||
|