从环境保护的角度考虑,下列燃料最理想的是( )
A.氢气
B.天然气
C.酒精
D.汽油
答案:A
Fans always ______ famous athletes everywhere to watch their games. [ ]
A. follow
B. ask
C. go
D. travel
脂肪成分因其在TWI和TWI上均为_________而易于识别,必要时可采用______________来证实。