基础体温呈（）型，提示卵巢无排卵。
参考答案：单相
—Excuse me, _____ is it from here to Zhongshan Park?
—It’s about seven kilometers.
A. how far B. how often C. how long
前 * * 单纯性狭窄是指单发而无并发症，且狭窄长度（）
A.＜1cm
B.＜1.5cm
C.＞1.5cm且＜3cm
D.＜3cm
E.＜2cm
