A:CH3CH2OH →CH3CHO
B:CH2=CH2→ CH3-CH2Br
C:苯→环己烷
D:CH3COOH → CH3COOC2H5
内向的小静转学来到了新的学校,在新的班级她一个人也不认识,感到很孤单。对此你给她的建议是( )
—Which songs do you like better, Lucy?
—I prefer the song Little Apple_______can attract many people.
北京的桥千姿百态,世界闻名,其中卢沟桥不但体现了中国古代造桥技术的高超,还和近现代史上哪一事件有关( )