左向右分流型的先天性心脏病有_________、________、__________等。
参考答案：室间隔缺损；动脉导管未闭；房间隔缺损
Tom _______ broccoli.[ ]
A. isn't
B. doesn't likes
C. isn't like
D. doesn't like
由泥炭到（）是成煤的第二阶段。
A、无烟煤
B、褐煤
C、焦煤
D、丝炭
