Section CDirections: In this section, you will hear three passages. At the end of each passage, you will hear three or four questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D. Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre.Questions 16 to 18 are based on the passage you have just heard.
A. They don't have much choice of jobs.
B. They are likely to get much higher pay.
C. They don't have to go through job interviews.
D. They will automatically be given hiring priority.
Questions 19 to 21 are based on the passage you have just heard.
A. It tastes better.
B. It is easier to grow.
C. It may be sold at a higher price.
D. It can better survive extreme weathers.