我国社会主义改造全面推开是从 _______年开始的。
The association is ________ to raising funds to help the blind.
因受者体内存在针对供者特异性抗原的预存抗体所引起的排斥反应是
General Motors, one of the world's largest auto manufacturers, is expanding its ________ in this country.
How long ________ they ________ (dig) the ditch?
，其中n为正整数,则f'(0)=()