5).Sun-hee asks a woman for directions.
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6).Sun-hee and Tara can’t understand the directions.
A. 对
B. 错
7).Sun-hee and Tara walk to the restaurant.
A. 对
B. 错
8). The restaurant is across the street from the subway station.
A. 对
B. 错
变形体虚功原理适用于()
A. 线弹性体系
B. 任何变形体
C. 静定结构
D. 杆件结构