7. My sister has got hair.
A. long dark curly
B. long curly dark
C. dark curly long
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8. My favorite chair isthis one.
A. leather orange
B. orange leather
C. orangeold
9. I really like your bicycle.
A. racing pink cute
B. cute pink racing
C. pink racing cute
10. Please take down these curtains!
A. old yellow horrible
B. horrible old yellow
C. yellow old horrible
杆件轴向拉伸或压缩时，其受力特点是：所有的外力或外力的合力沿杆方向作用。
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