孕晚期的营养要点之一是补充______
A．长链多不饱和脂肪酸 B．长链单不饱和脂肪酸C．长链饱和脂肪酸 D．中链多不饱和脂肪酸
参考答案：A
— Please tell Bruce he has won the first prize in the maths contest.
— ________! He never did so well before. [ ]
A. Good luck
B. Congratulations
C. That's right
D. What a good surprise
陆相石油具（）特征。
A.高蜡高硫
B.高蜡低硫
C.低蜡低硫
D.低蜡高硫
