—Isleptforonlyfivehourslastnight. —Oh,that’stoobad.Enou...

问题详情：

— I slept for only five hours last night.

 — Oh, that’s too bad. Enough sleep is ______ to your health.

       A. similar               B. harmful             C. friendly             D. necessary

【回答】

D

知识点：相似 相近词比较

题型：选择题