题干
The local authority is trying to __________ oversea investment by beautifying its environment．
A：value
B：encourage
C：introduce
D：affect
答案(点此获取答案解析）
B
The local authority is trying to __________ oversea investment by beautifying its environment．
A：value
B：encourage
C：introduce
D：affect
个不同的小球放入
个盒子中，则不同放法种数有（ ）