问题
选择题
—Mom，dad is smoking again!
—Well，let him cut it ________ gradually since old habits die hard.
A．off
B．down
C．up
D．out
答案
答案：B
考查短语辨析。cut off 中断cut down 减少，削减，cut up 切碎，cut out 删掉，句意：妈妈，爸爸又吸烟了。好吧。让他逐渐减少吸烟吧因为旧习惯很难除去。故选B。