专四专八考试

【单选题】
Studying dead tree rings shows ______.
A、where the people had to go
B、what the people had to eat
C、how the people left
D、why people had to leave
网考网参考答案：D
网考网解析：
[解析] 推断题。原文中So，after the people destroyed the trees，they had to move表示原因，故选D。A，B原文中未提及。C表示方式，和原文不符。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>