用以辨认转录起始点亚基是( )
A. a亚基
B. β亚基
C. β'亚基
D. σ亚基
E. ρ因子
Students who complete their _____1________ studies either at a for-year college or a university receive _______2_______ degree. One difference is that many colleges do not offer graduate studies.
因为动画制作中有很多的工序,但只需要靠个人的力量也可以完成。
A. 对
B. 错