美国独立战争的意义
参考答案:(1)、为资本主义发展扫除障碍。
(2)、推动欧洲、拉美革命。
— There are 60 students in my class and 44 of them use weibo very often.
— 44? That means about _____ of your classmates are weibo users, right? [ ]
A. half
B. one third
C. two thirds
D. three quarters
小明的铝合金书架断裂了,他最好采用哪种连接方式进行修补()。
A、焊接
B、榫接
C、胶接
D、铆接