如果a+b=1,则a和b互为倒数.______.(判断对错)
因为乘积是1的两个数互为倒数,
所以a+b=1,则a和b互为倒数.此说法错误.
故答案为:×.
What surprised me was not what he said but______ he said it.
A.the way
B.in the way that
C.in the way
D.the way which
失业基本上可分为摩擦性失业和( )
A.周期性失业
B.季节性失业
C.技术性失业
D.结构性失业