A:电风扇的底座较重
B:儿童自行车的两个侧轮
C:户外广告牌的三角形结构
D:A字形梯中间的拉杆
读图,A点的经纬度正确的是( )
3名学生排成一排,其中甲、乙两人相邻的概率是 ( )
After working all day,he was so tired that he was in no______to go to the party with us.