DNA的复制、转录和蛋白质的合成分别发生在()
A、细胞核细胞质核糖体
B、细胞核细胞核核糖体
C、细胞质核糖体细胞核
D、细胞质细胞核核糖体
参考答案:B
Mr Smith was so angry at all ________ Robert was doing _________ he walked out angrily.
A.that; what
B.that; that
C.which; which
D.what; that
位于肩胛骨冈下窝中央凹陷处,平第4胸椎是()。
A、肩外俞
B、天宗
C、肩贞
D、肩中俞