问题
选择题
Double ovens are a good idea, especially ________ you are cooking several meals at a time.
A．though
B．if
C．that
D．unless
答案
答案：B
连词辨析.though,尽管;if 如果;that那个,引导定语从句;unless除非.根据题意,如果你一次烹饪几种食物的话, 双烤箱是个好主意.故选B.