如图,AB∥CD,∠ABE=60°,∠D=50°,则∠E的度数为( )
如图是某农田长期使用一种农药的甲虫群体密度变化曲线,下列叙述中,不符合达尔文进化观点的是( )
Although it seemed to be ______ uncomfortable experience, he still found it ______ fun to learn diving.