关于数据业务传输速率评分的方法，正确的是：（）
A.前向分级更细
B.反向分级更细
C.前反向的标准一样
参考答案：A
—Excuse me, could you tell me ________?
—There is a bank on the second floor. You can make it there.
A．where I can exchange money
B．how I can get to the bank
C．if there’s a bank near here
D．where the bank is
咳嗽伴有绿色痰见于（）。
A.肺结核感染
B.肺部绿脓假单胞菌感染
C.肺部真菌感染
D.肺部厌氧菌感染
E.肺部化脓性感染
