Hi! I’m Mike the apple tree.

I like spring because it’s warm.

I get pink and white flowers.

I get new leaves.

The friendly bees visit me.

Ahhh! Spring.

I like summer because it’s hot.

My apples grow bigger and bigger.

My leaves become greener and greener.

People rest under my shade.

Hummm! Summer.

I like autumn because it is cool.

My apples become red.

My leaves become colourful.

People come and pick my red apples.

Wow! Autumn.

I have no leaves or apples any more.

But, I like winter thanks to the clean white snow.

I can sleep and wait for spring.

Zzzzz! Winter.

小题1: The poem is about __________.

A．what season is “my” favourite

B．what the weather is like

C．why “I” like different seasons

D．why “I” dislike seasons小题2:Who is “I” in the poem?

A．An apple.

B．An apple tree.

C．A bee.

D．A boy.小题3:“I” like many things about spring, but “I” don’t talk about __________.

A．the warm weather

B．the friendly bees

C．the colourful flowers

D．the comfortable wind小题4:Which of the following is NOT TRUE?

A．“I” don’t like winter thanks to the snow.

B．“I” like people to pick the apples.

C．The apples become bigger in summer.

D．“I” lose the leaves in winter.

如图所示为血红蛋白和肌红蛋白的活性部分--血红素的结构式．

回答下列问题：

（1）血红素中含有C、H、O、N、Fe五种元素，C、N、O三种元素的第一电离能由小到大的顺序是______，写出基态Fe原子的核外电子排布式______．

（2）血红素中N原子的杂化方式为______，在右图的方框内用“→”标出Fe²⁺的配位键．

（3）铁有δ、γ、α三种同素异形体，γ晶体晶胞中所含有的铁原子数为______，δ、α两种晶胞中铁原子的配位数之比为______．