通报，是纪检监察机关（）而面向广大党员和群众的一种周知性公文。
参考答案：表彰先进、剖析案例、发布信息
Sixty miles ________ in a single night, so they were exhausted.
A．were covered
B．have covered
C．was covered
D．has covered
—Hi, Mary. __________?
—Not so well. I can’t keep up with the other students.
A．How long have you studied chemistry
B．Who is teaching you chemistry
C．How is your chemistry study going
D．Where are you learning chemistry
