对老年人购买习惯的电话访问，最好选择在晚上进行。（ ）
A. 对
B. 错
Match the words on the left with their meanings on the right.
Choose the right things to do in each of the following situations.1. You are swimming and sunbathing on a beach.
A. Leave your iPod in a locked waterproof case.
B. Put your iPod directly in the sunlight while sunbathing.
C. Listen to your iPod at 50% volume for more than two hours on the beach.
2. The headphone is dirty. You want to clean it yourself.
A. Use a household cleaner.
B. Use a cotton ball with rubbing alcohol (外用酒精).
C. Use a fine toothbrush with water.
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