中国社会主义改造的道路是 _______。
The wealth of a country should be measured ________ the health and happiness of its people as well as the material goods it can produce.
The TV station, in ________ to massive popular demand, decided to continue the soap opera(肥皂剧 ).
Senior members of the staff competed eagerly ________ the position of sales manager in the company.
当x→0时，与根号x等价的无穷小量是（）
，其中n为正整数,则f'(0)=()