Questions 17 through 20 are based on the following passage.
（1）A.She finds it dull to learn English.
B.She finds she needs to remember many things.
C.She doesn't have a good memory.
D.She does not know how to use her time.
（2）A.Understanding helps people remember longer.
B.Understanding helps people remember faster.
C.Understanding leads to a complete memory.
D.Understanding adds fun to remembering.
（3）A.Find out the background information.
B.Figure out the basic structure.
C.Set apart the facts with opinions.
D.Link up the similar information.
（4）A.Show the things with the hands.
B.Describe the things in words.
C.Imagine the things in one's mind.
D.Draw the things on the paper.