— ________________
A:That's too bad.
B:No, they can't.
C:Sure, I'd love to.
D:I don't love.
关于胚胎发育及胚胎工程的叙述正确的是( )
如果有两个质数的和等于24,可以是____+____,____+____或____+____。
-- Daniel, your books are in a terrible mess on your desk.
-- Really sorry. I’ll _________ right now.