右图是某细胞在进行某生命活动前后几种生物膜面积的变化图，在此变化过程中最可能合成（）
A.胰岛素
B.雄性激素
C.呼吸酶
D.甲状腺激素
参考答案：A
与血液的运行和调节有关的是（）。
A．肝的疏泄功能
B．肝的藏血功能
C．两者均有关
D．两者均无关
If Mark saved an average (arithmetic mean) of $80 per week for 3 consecutive weeks, how much did he save the second week ？（）
(1)The average amount that Mark saved per week for the first 2 weeks was $60.
(2)The amount that Mark saved the first week was the amount he saved the second week and the amount he saved the third Week.
A．条件(1)充分，但条件(2)不充分．
B．条件(2)充分，但条件(1)不充分．
C．条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．
D．条件(1)充分，条件(2)也充分．
E．条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．
the amount he saved the second week and 
the amount he saved the third Week.