— Mrs. Green. Do you think I can get an “A” in the exam if I start working hard now?
— Of course. _________.
A:Better late than never
B:Many hands make light work
C:You cannot burn the candle at both sides
D:Actions speak louder than words
价格x(元/kg)
10
15
20
25
30
日需求量y(kg)
11
8
6
5
将大粒的花生种在贫瘠的土壤中,结出的花生较小,这种变异____ (“能”或“不能”)遗传给后代。因为这种变异单纯是由____ 变化引起的而其内部的____ 并没有改变。