【单选题】经溶剂萃取后含有溶质的萃取剂相称为( )
【简答题】Once you know how they are pronounced and what they stand for, you can safely use them.
【单选题】If you ask the way, which one can't you use? [ ]
A.
Can you tell me the way to the park?
B.
How can I get to the park?
C.
Which is the way to the park?