根据短文内容和首字母的提示，把所缺单词完整地填写在短文后的横线上。

     Nowadays, it's common to keep dogs as pets. We can often see dogs' owners taking them for a walk.

But have you (1)h______ of taking penguins for a walk? Here (2)i______ a piece of news from Japan. In

Tokyo Zoo, penguins go out for a walk in line every day. It is said that this can make them happy and stop

them from being homesick (想家的). The penguins in the zoo didn't eat as (3)w______ as they did in South

Pole (南极) and they were (4)u______ to the keepers when they first got to the zoo, maybe they were not

used to the life in the zoo. So the zoo keepers (5)c______ up with this good idea. They just let them walk

as they did in South Pole. Now, all these penguins have become happy.

有一工业厂房高低跨排架，低跨跨度15m，高跨跨度为24m，柱间距为6m，该厂房采用预应力钢筋混凝土屋架，屋面采用预应力大型屋面板。车间的纵向全长度为120m，在车间中部 60m处设有双柱温度伸缩缝，车间四周的围护墙为240mm砖墙。建筑平面及剖面如图。

C列柱的上柱和下柱在无吊车和有吊车作用时的排架平面内的计算长度值（m）与下列（）项数值最为接近。

A．上柱：无吊ι₀=10.5下柱：无吊ι₀=20.4 有吊ι₀=10.5 有吊ι₀=9.0

B．上柱：无吊ι₀=8.4下柱：无吊ι₀=17.0 有吊ι₀=8.4 有吊ι₀=9.4

C．上柱：无吊ι₀=4.2下柱：无吊ι₀=9.0 有吊ι₀=4.2 有吊ι₀=9.0

D．上柱：无吊ι₀=8.4下柱：无吊ι₀=11.25 有吊ι₀=8.4 有吊ι₀=11.25