A:CH4 C2H4
B:CH4 C3H6
C:C2H4 C3H4
D:C2H2 C3H6
看图,□里应填( )。
A. She works at a university.
B. I go to school by bus.
C. Yes, she is.
D. He is a head teacher.
E. I want to be a pilot
2017年3月29日,英国首相特雷莎·梅向欧盟组织递交“脱欧”信函,通知其英方正式启动“脱欧”程序。下面关于这一组织的说法正确的是( )
Please____ ____ ____your things on the train.
松赞干布与文成公主这两位历史人物体现了唐朝与哪一少数民族间的友好关系( )