在粤北、粤东、粤西建立产业转移园区将有利于
A.充分利用三地丰富的矿产资源
B.节约土地,形成集聚效应
C.城市人口向农村转移
D.促进工业向乡村地区扩散
答案:B
David was responsible and hardworking, _____ he was promoted from a clerk to a manager.
A.which
B.as
C.for what
D.for which
跨细胞液包括()
A.血浆
B.关节液
C.脑脊液
D.胸膜腔液
E.腹膜腔液