正常成人脾厚径不超过()
A.2cm
B.3cm
C.4cm
D.5cm
E.6cm
参考答案:C
(2013·大连二模)We each ________ strong points, but each of us on the other hand ________ weak points.
A.have; have
B.has; have
C.have; has
D.has; has
简述循环证明,并举出具体事例予以说明。