若(a-1)2+|b+2|=0,那么a+b=______.
由题意,得a-1=0,b+2=0,.
所以a=1,b=-2.
所以a+b=1-2=-1,
故答案为:-1.
若4x=2x+6,则x=______.
The construction of the new bridge has been()for two weeks because of the bad weather.
A.devoted
B.developed
C.depended
D.delayed