脑组织在正常情况下主要利用葡萄糖供能,只有在下述哪种情况下,脑组织主要利用酮体()
A.剧烈运动
B.空腹
C.短期饥饿
D.长期饥饿
E.轻型糖尿病
参考答案:D
秦皮中主要含()
A.香豆素类
B.木脂素类
C.黄酮类
D.蒽醌类
E.环烯醚萜类
What does the speaker think of the movement to the suburbs
A.People may miss the cultural life in cities.
B.The movement is still developing.
C.It satisfies man’s need to live and work in an ideal environment.
D.People may like the companionship in suburbs.