In this section you will hear one dialogue and two passages. After each one, you will hear five questions. After each question read the four possible answers marked A, B, C and D. Choose the best answer and mark the letter of your choice on the ANSWER SHEET.

A

difficult case.

B

A trivial illness.

C

A deadly disease.

D

A serious condition.

答案
解析
视频解析
menjieliefu media file download