It is hard for us to eat better, exercise more, and slee Wap版

试题详情及答案解析

It is hard for us to eat better, exercise more, and sleep enough, ________ we know we should.

A．since	B．even if
C．unless	D．as if

答案：B

试题分析：考查状语从句。句意：即使我们知道我们应该吃地更好、更多锻炼和足够的睡眠，我们也很难做到。A既然，自从；B即使；C除非，如果不；D好像。故B正确。
考点：考查状语从句