汽车行业的影响无法回避的问题包括()
A. 气候变暖
B. 环境污染
C. 能源危机
D. 所有选项
新能源汽车包括混合动力、纯电动汽车、太阳能汽车、燃料电池电动汽车、氢发动机汽车等()
The words “so” “ones” can be used as a kind of____()
A. reference
B. ellipsis
C. conjunction
D. substitution
Which of the following transitional words can indicate contrast()
A. likewise
B. nevertheless
C. similarly
D. furthermore