第一部分 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。
A
The Dog and the Joey
Leonie Allan lives in an area of Australia where people often find wildlife in their yards. One spring morning, Leonie took her dog Rex for a walk as usual. The walk was casual, but Rex was acting strangely afterward. As Leonie worked in the yard, Rex kept looking down on the road where they had taken their walk. Then he began standing very still, with his nose pointing toward what he wanted Leonie to notice.
