内共生说
参考答案：
即某些种类的细菌被一些真核生物的祖先吞噬；并被永远地接受为细胞的内共生体
地黄生用和炮制后的功效有所不同。
生地黄的功效是（）。
A.清热.生津.凉血.止血
B.补血止血
C.活血补血
D.滋阴补血.益精填髓
E.凉血止血
F.清热凉血.养阴生律
I've been told that our teacher has _____ the deadline for the composition by two days and we have to
hand it in tomorrow morning.[ ]
A. made
B. cut
C. advanced
D. suggested
