It’sreallyunwiseofsometeenagersfromlow-incomefamiliest...

问题详情：

 It’s really unwise of some teenagers from low-income families to spend a large sum of money on Apple products ______ they could buy other cheaper brands.

       A. unless                 B. when                   C. so that                D. in case

【回答】

B

知识点：连词

题型：选择题