任何一笔货币金额都可以根据利率计算出在未来某一时点上的本利和,通常称其为()。
参考答案:终值
如图所示,图是鸟卵的结构示意图,据此回答下列问答:
(1)填写图中各结构各称.
①______;②______;③______;
④______;⑤______;⑥______;
⑦______;⑧______.
(2)具有保护卵细胞作用的结构是______和______.
(3)进行胚胎发育的部位是______.
(4)为受精卵发育成胚胎提供营养的结构是______和卵白.
We had to be patient because it ______ some time ______ we got the full results.
A.was; since
B.had been; since
C.was; before
D.would be; before