下列有机化合物中，只含有C、H、O三种元素的是[ ]
A．氨基酸
B．核苷酸
C．脱氧核糖
D．磷脂
答案：C
—Yao Ming got his left ankle injured and has not played since.
—When was ________?
—________ was on Nov. 10th when Houston Rockets beat Washington Wizards.[ ]
A. that; It
B. it; It
C. this; It
D. it; That
生产中，当钢温均匀时，轧件头尾好几米有耳子，主要是由于（）调整不当所致。
A.导卫开口度
B.张力
C.红坯尺寸
D.料型尺寸
