苏轼生活时期是（    ）

就花生果实大小的变异回答下列问题：
（1） 大花生和小花生是两个不同的品种，大花生的后代一般结大花生，小花生的后代一般结小花生，这说明生物具有____ 特性，是由它们细胞内的____ 所决定的。
（2） 大花生和小花生两个品种的形成，说明生物具有____ 特性。
（3） 从大花生中选择一粒饱满粒大的种子种下去，所收获的花生也有大小之分。这说明：生物的性状除了由____ 所决定外，还与____ 有关。

    Here are t____ pictures. A man and a boy are in one picture. Who are they? L____ me tell you. The man is Mr. White, and the boy's n____ is Bill. He's the man's son. Now they are in Bill's bedroom. We can see some Chinese b____ on his desk. And on the bed, t____ is a shirt. It's Bill's. His trousers are on it, too.

    Now let's l____ at the other picture. You can see a woman and a girl in it. The woman is Bill's m____ and she's in her daughter, Ann's room. You can see a photo o____ the Whites on the white wall. W____ that on the floor? Oh, it's Ann's hat. but it looks l____ a brown cat.

如图，一个正六边形转盘被分成6个全等的正三角形．任意旋转这个转盘1次，当转盘停止转动时，指针指向阴影区域的概率是（　　）