1929年经济危机在美国爆发后迅速成为一场波及全世界的大危机。这主要是因为
A.They're under the bed.
B.It's my father's.
C.Try this.
D.I'm eleven.
E.So beautiful!
(____)⑴How old are you?
(____)⑵Where are my trousers?
(____)⑶The hat is so big.
(____)⑷Whose jacket is it?
(____)⑸Look at my dress.
函数f(x)=ex+x-2的零点所在的一个区间是( )