戏剧剧本的语言通常包括两个部分:_____________ ,______________。
Which formula could represent a straight chain saturated compound?
A. C12H22
B. C8H16
C10H22
D. C2H2
Which of the following molecules does NOT exist as a pair of cis/transisomers?
A. CH3CH=CHBr
B. CH2=CHBr
CH3CH2CH=CHCH2CH3
D. pent-2-ene