中国在南极洲的考察站有（ ）。
A．长城站
B．中山站
C．东方站
D．中华站
参考答案：A,B
________ she couldn't understand was ________ fewer and fewer students showed interest in her lessons.
A．What ; why
B．That ; what
C．What ; because
D．Why; that
简述绩效信息的收集方法。
