Medium well means the degree of the ripeness is___ percent（）
A. 40
B. 50
C. 90
D. 70 or 80
查看答案
弹性力学的任务与下列哪门课程相同（）
A. 理论力学
B. 材料力学
C. 结构力学
D. 流体力学
During the English news clip, how many flights has been cancelled in Shenzhen airport yesterday（）
A. 100
B. 120
C. 200
D. 220
During the English news clip, which factor results in the flight delays and cancellations in southern China（）
A. ground fog
B. heavy snow
C. typhoon
D. thunderstorm
微信支付 
支付宝支付