问题
选择题
—Dad, it's time for "Happy Camp", please _____ the TV.
I like the program very much.
—OK. [ ]
A. turn on
B. turn off
C. turn up
答案
答案:A
—Dad, it's time for "Happy Camp", please _____ the TV.
I like the program very much.
—OK. [ ]
A. turn on
B. turn off
C. turn up
答案:A
下表是某实验中学的同学做的“废电池浸出液对小麦种子萌发的影响实验”的结果
时间 | 第一天 | 第二天 | 第三天 | 第四天 | 第五天 | 第六天 | 第七天 |
清水中发芽率 | 0 | 8% | 68% | 82% | 91% | 93% | 95% |
废电池浸出液的发芽率 | 0 | 2% | 7% | 8% | 8% | 10% | 10% |
(2)针对上述结果,你能得出什么结论?(5分)
(3)请你分析出现上述结果的原因及后果。(5分)