在下列物体中既具有动能又具有势能的是[ ]
A.平直轨道上行驶的火车
B.拉长的橡皮筋
C.高空中正在下落的冰雹
D.被举高的杠铃
答案:C
He was scolded for not putting the things ____they belonged.
A.which
B.what
C.that
D.where
气性坏疽属于()
A.毒血症
B.菌血症
C.脓血症
D.败血症
E.脓毒败血症