心功能Ⅲ级是指下述哪些情况()
A.体力活动不受限
B.体力活动明显受限
C.体力活动轻度受限
D.轻度活动即乏力、心悸、气急
E.休息时亦乏力、心悸、气急
参考答案:B, D
宋代,在诗、词、散文等方面都取得独特成就的,堪称宋代伟大作家的是()。
A.苏轼
B.陆游
C.欧阳修
D.王安石
Having a trip abroad is certainly good for the old couple, but it remains _____ whether they will enjoy it. [ ]
A. to see
B. to be seen
C. seeing
D. see