袁静、孔厥以白洋淀为背景的小说是(),这是一部()小说。
参考答案:《新儿女英雄传》;章回体长篇
His father is __________ engineer and he works __________ research.
A.an, on
B.an, with
C.the , on
D.a, with
从心理学上讲。“一心”是可以“二用”的,这体现了注意的( )
A.稳定性 B.广度C.分配 D.转移