Thinking Step 1: 分析题目条件。“你们都要”意味着 A AND B AND C = True。
Firefighters in Sicily have rescued about 400 rare books from a library in Niscemi that hangs on the edge of a mudflow, after a devastating landslide in January tore away an entire slope of the town and carved a 4km chasm.，更多细节参见服务器推荐
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"We had Stevie Wonder last year. He absolutely loved playing here because of the acoustics and played a couple of songs he hasn't played in years because he wanted to play them in this venue.
An agarose gel. Credit: Kadina Almhjell，这一点在同城约会中也有详细论述