Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions.
Now listen to the passage.
Which of the following is NOT true

A．English learning at school usually takes a long time.
B．More and more people want to learn English nowadays.
C．It is not necessary for many people to go to English speaking countries to learn English.
D．It is more difficult to learn English quickly than to learn it slowly.