A：叶绿体的外膜上
B：类囊体的薄膜上
C：叶绿体的内膜上
D：叶绿体的基质
乳酸（C3H6Ox）是一种重要的体内代谢物．其相对分子质量为90．求：
对待外来文化，我们应有的态度是（ ）
Snowfall and low temperatures haven't made the animals move hurriedly for shelter. _______, they greet the snow with excitement, either enjoying the snowy landscape or tasting snowflakes.
