引起生物可遗传变异的原因有三个，即基因重组、基因突变和染色体变异。以下几种生物性状的产生，于同一种变异类型的是（ ）①蝇的白眼 ②豌豆的黄色皱粒、绿色圆粒 ③八倍体小黑麦的出现④人类的色盲 ⑤玉米的高茎皱形叶 ⑥人类的镰刀型细胞贫血症
A：①②③
B：④⑤⑥
C：①④⑥
D：②③⑤
Our Trip to Yibin City
When
On Friday.
How
We will go there 1.
What
But you will need to bring 2 .
Where
Then in the afternoon we will go to 3.
What time
⑴Now please remember that the bus will leave right at 4 .
⑵Tell your parents we'll be back at school 5.
It's a yellow dog.
