慢性肺淤血时的心力衰竭细胞内有：
A．含铁血黄素B．脂褐素C．黑色素D．胆色素E．炭末
参考答案：A
读下面光照图，北京市白昼由长到短的排序是
① ② ③ ④
A．②①③④
B．②④③①
C．①④③②
D．①③④②
All the students will have a party _____ the afternoon of January 1. [ ]
A. in
B. on
C. at
