（Ⅰ）若函数f（x）在x=1处的切线斜率为2，求实数a；

（Ⅱ）若a=1，求函数f（x）在区间0，3的最值及所对应的x的值．

用方框中所给的词语的适当形势填空，使短文正确、通顺、连贯（每词限用一次）

Yesterday I visited the Hong Shan Forest Zoo. I was____ to find few people there. ____ are very important places. They provide homes____ many endangered animals .They also help to educate the public about
____ them . If we ____ our zoos, they won’t have enough money to take care of so____  fine animals. Therefore, People should go and visit the zoos more often to learn about animals and help to protect them ____ .
However, some people don’t think so. They think zoos are terrible places for animals to live.“I’ve visited a lot of zoos in my life, and I have never seen one I like or one that____ animals to live in .”Jenny said The animals____ in small cages and can ____ move at all .What’s more, they are only given food once a week That’s terrible.

利用遗传变异的原理培育作物新品种，在现代农业生产上得到广泛应用．请回答下面的问题：

（1）水稻的穗大（A）对穗小（a）显性．基因型为Aa的水稻自交，子一代中，基因型为____ 的个体表现出穗小，应淘汰；基因型为____ 的个体表现出穗大，需进一步自交和选育．

（2）水稻的晚熟（B）对早熟（b）显性，请回答利用现有纯合体水稻品种，通过杂交育种方法培育纯合大穗早熟水稻新品种的问题．

①培育纯合大穗早熟水稻新品种，选择的亲本基因型分别是____ 和____ ．两亲本杂交的目的是____ ．

②将F₁所结种子种下去，长出的水稻中表现为大穗早熟的几率是　____ 　，在这些大穗早熟植株中约有　____ 　是符合育种要求的．