一. 听录音，在A、B、C选项中选出你听到的句子。（每小题念两遍, 共3题，每小题1分）
1. A. We shouldn’t try to understand things at all.
B. We should try to understand things in fact.
C. We should try to understand things in nature.
2. A. Spiders appear healthy and hungry.
B. Spiders appear unhealthy and hungry.
C. Spiders appeared healthy and thirsty.
