大脑前动脉阻塞时出现小便失禁，是由于损害了（）。
A.额极
B.旁中央小叶
C.胼胝体前4／5
D.扣带回
E.额叶底部
参考答案：B
When asked about the secret about staying young, he said that a balanced diet __________ with exercise was the recipe for a healthy life.
A． conducted
B． concluded
C． combined
D．connected
按照传动和控制机构划分，挖掘机可分为行走机构、提升机构、推压机构和（）机构。
