题干
——I feel so tired after a long walk.
——You had better have a ______.
A：talk
B：rest
C：swim
D：look
答案(点此获取答案解析）
B
——I feel so tired after a long walk.
——You had better have a ______.
A：talk
B：rest
C：swim
D：look
,则对角线长为( )
