长期采用全胃肠外营养,理想静脉为
A.颈内或锁骨下静脉
B.颈外静脉
C.头静脉
D.大隐静脉
E.上肢静脉
参考答案:A
在移栽榕树时,常常要去掉部分枝叶,这样做是为了( )
A.操作方便
B.减少水分蒸腾
C.降低光合作用
D.降低呼吸作用
Some of the musical pieces for______Isadora Duncan choreographed dances were waltzes and mazurkas by Chopin.
A.whom
B.that
C.which
D.what