单项选择题


Questions 19 to 22 are based on the conversation you have just heard.

A．Mating habits of squid and octopus.
B．The evolution of certain form of sea life.
C．The study of marine shells.
D．Survival skills of sea creatures.
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1. 描述图表中生活费用支出的变化情况 2. 给出可能的原因 3. 得出你的结论Year 199819911994199720002002Food24.4%24%23.1%22.3%22%22.2%Medical Care 2.5%2.5%2.7%2.9%3.2%3.2%Transportation and Communication 10.2%10%10.6%11.6%12.8%13.2%Clothes7.1%7.1%6.2%5.7%5%4.8%Fuel, Light and Water Charges 5.1%5.1%5.4%5.8%6.2%6.3%
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