猪肉中常见的寄生虫有：（）
A.旋毛虫
B.华支睾吸虫
C.姜片虫
D.囊虫
E.猪带绦虫
参考答案：A, D, E
When he learned that his brother had returned from abroad, he set off to his home _____. Which of the
following is not OK? [ ]
A. immediately
B. right away
C. right then
D. right now
E. at once
沸煮法主要检测水泥中是否含有过量的游离CaO、游离MgO和三氧化硫。( )
