不定项选择

绿色包装成为现代包装业的主流。

A．正确
B．错误

你可能感兴趣的试题

单项选择题

Which of the following conditions will cause stomata opening?

A．At night, when there is no photosynthesis.
B．Sunny morning, when the supply of water is abundant.
C．None.
D．Sunny morning, but the plant is dehydrated.

单项选择题

已知,则
A、
B、
C、
D、