超声多普勒最早在妊娠几周能听到胎心音()
A.5周
B.6周
C.7周
D.10周
E.12周
参考答案:C
We all agree________his suggestion________the work be done at once. [ ]
A. to;that
B. to;what
C. with;that
D. to;which
骨折的特殊体征是
A.畸形
B.剧烈疼痛
C.异常活动
D.功能障碍
E.骨擦音(感)