My favorite fruit is _______. [ ]
A. meat
B. pears
C. hamburgers
D. carrots
答案:B
I need time ____ my computer. [ ]
A. to mend
B. mending
C. mend
D. mended
石灰熟化时,要在化灰池中“陈伏”一段时间,主要目的是消除()的危害。
A、欠火石灰
B、过火石灰
C、石灰水化时放热
D、石灰硬化时体积收缩