第Ⅰ卷
第一部分 听力（共两节，满分 30 分）(略)
第二部分 阅读理解（共两节，满分40分）
第一节（共15小题：每小题2分，满分30分）
阅读下列短文，从每题所给的四个选项（A、B、C和D）中选出最佳选项，并在答题卡上将该项涂黑。
A
People have been acting like people—in other words，they’ve been making tools，creating ceremonies，and sharing food—for a long time. That’s the conclusion of a recent study from South Africa’s southern coast.
There，in a cave lying above the sea，researchers from Arizona State University have found evidence that humans were behaving in surprisingly complex ways as early as 164,000 years ago. Our species，Homo sapiens，appeared an estimated 200,000 years ago.
The cave held three important clues about the behavior of these Stone Age people.
First，the researchers found the remains of all kinds of shellfish. The people who lived in the cave probably
