【单选题】One day his father was surprised to see Tommy, because his father thought
A.
he should be studying in school
B.
the school should be closed
C.
the teacher said something to Tommy
【单选题】Tommy spent most of his time ______.
【单选题】His name is Tommy Miller, so his __________ name is Miller.
【单选题】我国最早的蕴涵着丰富军事思想的著作是哪一部?
【单选题】氨水中氨的质量分数为 0.250 ,则氨水中氨的摩尔分数为( )