问题
单项选择题
有两根圆轴，一根是实心轴，一根是空心轴。它们的长度、横截面面积、所用材料、
A.A
B.B
C.C
D.D
答案
参考答案：C
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有两根圆轴，一根是实心轴，一根是空心轴。它们的长度、横截面面积、所用材料、
A.A
B.B
C.C
D.D
参考答案：C
My First Day I was still shy in the presence of a crowd. And my first day at the new 36 made me a laughing stock（笑柄） of the classroom .I was sent to the blackboard to write my 37 . I knew my name, and knew how to write it , but standing at the blackboard with the 38 of so many pupils on my back made me 39 inside and I was unable to write a single letter. “Write your name,” the teacher called to me. I 40 the white chalk to the blackboard, as I was about to write, my mind went blank, I could not remember my name, 41 the first letter. Somebody laughed and I became 42 . “Just forget us and write your name,” the teacher called and walked to my side, 43 at me to give me confidence. “What is your name?” she asked. “Richard,” I 44 “Then write it.” I turned to the blackboard and lifted my hand to write, but then I was 45 again. I tried to 46 my senses but I could remember nothing. I realized how totally I was 47 and I grew weak and leaned my hot forehead 48 the cold blackboard. The room burst into a loud 49 and my muscles froze. I sat and 50 myself. Why did I always appear so dumb 51 I was called upon to perform in a crowd? I knew how to write as well as any other pupil in the classroom, and there was no 52 I could read better than any of them, and I could talk 53 when I was sure of myself. Then why did strange 54 make me freeze? I sat with my ears and neck 55 , hearing the pupils around me whisper, hating myself.
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