“绿色生活”是一种能源、环保的生活理念,下列行为中符合该理念的是( )
A:随着丢弃旧电池
B:大量燃放烟花爆竹
C:将实验后的废液直接倒入水池中
D:尽量选择公共交通工具出行
已知C3N4晶体具有比金刚石还大的硬度,且构成该晶体的微粒间只以单键结合。下列关于C3N4晶体说法错误的是( )
A. He is sending an email to his friend.
B. This dress is for Amy.
C. The boys are playing football.
D. This girl is writing a letter.
E. We had a happy time in the park.
(____)
(____)