两缺口理论认为，制约发展中国家经济增长的因素是（）；外汇。
参考答案：储蓄
_______, Sharon couldn’t find her lost wallet.
A．As she might try
B．Might she as try
C．She might as try
D．Try as she might
为音乐欣赏选择语言材料时还应注意语言优美、文学性强，能为（）理解与喜爱。
A.家长
B.教师
C.幼儿
D.园长
