—No, I
A:Were, wasn't
B:Do,don't
C:Was, wasn't
Have you ever listened to the song Yesterday Once More, ________ singer died in her early years?
很多古人做事有始有终,____就是其中一位。
A maths book and five ____(notebook/notebooks).
下列有关细胞核的说法,除哪项外都是错误的( )
如图,将两根钢条AA′、BB′的中点O连在一起,使AA′、BB′可以绕着点O自由转动,就做成了一个测量工件,由三角形全等得出A′B′的长等于内槽宽AB;那么判定△OAB≌△OA′B′的理由是( )