1908年提出同心圆学说的是()
A.Jonson
B.Gillings
C.Gysi
D.Christensen
E.Gerber
参考答案:C
—Have you told Joan the bad news that her grandfather fell off the bike and hurt seriously?
—Yes. I told her ________I saw her this afternoon.[ ]
A. while
B. the moment
C. until
D. suddenly
血浆凝血活酶的组成是()
A.Ⅹ、Ⅴ、Ca2+、PF3
B.Ⅶ、Ⅲ、Ⅹ、Ⅴ、Ca2+、PF3
C.Ⅹa、Ⅴa、Ca2+、PF3
D.Ⅹ、Ⅺ、Ⅸ、Ⅷ、Ⅹ、Ⅴ、Ca2+、PF3
E.以上均不是