语言教学的内容包括__________和__________两个方面。

单项选择题Which is not one of the things researched by a bank

单项选择题The author says that he is a naturalist rather than a scientist probably because he thinks he _______.

单项选择题A．whatB．thoseC．asD．which

单项选择题The reason why housewives are not as healthy as career women is that ______.

单项选择题What does “down payment” refer to in the passage