红移
参考答案：
从遥远的星系和类星体发出的光线与实验室光源中同一谱线相比较，向红端位移的多普勒现象。
He doesn't do his homework______, so he always makes a lot of mistakes. [ ]
A. careful enough
B. enough carefully
C. carefully enough
D. enough careful
特发性生长激素缺乏症的临床特点，哪项不正确（）
A.智能低下
B.身材矮小，匀称
C.生长速度低下
D.无黏液性水肿等
E.骨龄落后
