The workers were made _____ the whole day. [ ]
A. work
B. to work
C. worked
D. working
答案:B
Z值是使某一微生物的D值增加或减少10倍所需要变化的温度数。()
“吾家洗砚池头树,个个花开淡墨痕,不要人夸好颜色,只留清气满乾坤”。此诗作者是()。
A、苏东坡
B、金农
C、王冕
D、齐白石