REM睡眠约占总睡眠时间的比例为()
A.5%~10%
B.10%~15%
C.15%~20%
D.20%~25%
E.25%~30%
参考答案:D
—What kind of books do you like?
—I like funny storybooks. They're very_.
A.boring
B.lazy
C.quiet
D.interesting
比40多25%的是______,40比______多25%.