我国最大的林区是 ______．
A．东北林区
B．西南林区
C．东南丘陵林区
D．“三北"防护林区
参考答案：A
解析：我国最大的林区是：东北林区．
Tom was running out of time in the exam, but there still remained several questions_________.
A. to be answered B. to answer C. answered D answering
圆锥yuán zhuī
