消费需求的影响因素包括（）。
A.可支配收入
B.长期趋势
C.居民财富
D.总体价格水平
E.总供给水平
参考答案：A, B, C, D
Each species has certain______features.
A．distinguish
B．distinguished
C．distinct
D．distinctive
He has been fired and will have to ____ over charge of his office tomorrow.
A．take
B．hand
C．get
D．go
