题目内容：
16. What makes language learning easier for some people than for others, according to the text?A. Some people learn grammar more quickly than others.
B. Successful language learners use special techniques.
C. Some people have good teachers and good books.
D. Successful language learners are more intelligent than others.
17. How do successful language learners learn languages?
A. They learn independently, actively and purposefully.
B. They learn special techniques from their teachers.
C. They learn the rules and patterns of the language from books.
D. They learn to think about the meaning of every word.
18. Why do successful language learners find it easy to practice using the language regularly?
A. They find it easy to communicate.
B. They look for inexact information.
C. They want to teach the language to others.
D. They want to learn from people who speak the language.
19. "If your language learning has been less than successful, you might do well to try some of the techniques outlined above." What does this sentence mean?
A. Unsuccessful language learners should try the techniques of successful language learners.
B. Less successful language learners try to use successful language learning techniques.
C. Language learning is less successful if you use these techniques.
D. Less successful language learning is the result of using these techniques.
20. Accor
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