I'd like to take this _________ to thank all of you for your hard work on this project.
A:duty
B:opportunity
C:area
D:disagreement
下列描述,不正确的是( )
I like sunny days.
下面各组汉字中完全符合括号内所注的造字方法的一组是( )
反映了作者“从贱至贵”,由低级到高级的生物进化观点的“东方医药巨典”是