(-1)4-

2

3

×[(-

1

2

)÷(0.75-1)+(-2)3]

=1-

2

3

×[（-

1

2

）÷（-0.25）-8]

=1-

2

3

×[2-8]

=1-

2

3

×[-6]

=1+4

=5．