[单项选择]
{{B}}Section A{{/B}}
{{B}}Directions:{{/B}}{{I}} This section is to test your ability to understand short dialogues. There are 5 recorded dialogues in it. After each dialogue, there is a recorded question, Both the dialogues and questions will be spoken only once. When you hear a question, you should decide on the correct answer from the 4 choices marked A), B), C) and D) given in your test paper. Then you should mark the corresponding letter on the Answer Sheet with a single line through the center.{{/I}}

A. $3oo.
B. $500.
C. $450.
D. $600.

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