少年期是指11、12岁到14、15岁的阶段,是个体从童年期向青年期过渡的时期,大致相当于初中阶段,具有______、______的特点。
参考答案:半成熟 半幼稚
有一蜗杆传动机构,已知其蜗轮齿数为58,蜗杆头数为2,求其传动比是多少?解:i===29
With the government's aid, those________by the earthquake have moved to the new settlements.[ ]
A. affect
B. affecting
C. affected
D. were affected