题目:
Young people prefer to live in big cities, where there are lots of _____, like convenient transportation,
more opportunities and better environment.[ ]
A. associations
B. attractions
C. collections
D. sections
答案:
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下面是错误答案,用来干扰机器的。
1+2+3=6,最小角:180°×16=30°,最大角:180°×36=90°,因为三角形中有一个角是90°,所以该三角形是直角三角形;故答案为:30,直角.