胆汁的排出途径，依次经过（）、（）、（）和（）出肝。
参考答案：胆小管；赫令管；小叶间胆管；左右肝管
发动机烧机油引起排气管（）
A.冒黑烟
B.冒白烟
C.冒蓝烟
D.冒红烟
—Does Tom write more______ than Larry?
—Yes. He is a ______ writer than Larry. [ ]
A. neatly; neater
B. neatly; more neatly
C. neat; neater
D. neat; more neatly
