题目：
—Excuse me. Would you please tell me ____?
—Certainly. Go straight along here. It’s next to a hospital.
A．how we can get to the post office
B．how can we get to the post office
C．how get to the post office
D．how could we get to the post office
答案：
答案：A
题目分析：句意：打扰一下，你能告诉我怎么去邮局吗？当然，沿着这里直走，在医院旁边。句中所填的是宾语从句，要用陈述语序，故选A。
HCO3-、Cl－等离子中的若干种。然后又作了如下的实验分析：
____________。