题目内容：

根据短文内容，选择适当的单词或短语填空，使短文意思完整。每个选项至多使用一次，有两项剩余。请将答案填写在答题卡指定位置。

if   blind   below   powerless   However   earth    As a result   powerful    on   food

Moles are small animals, about 10-12 cm long, with soft grey fur. They spend almost all their time 1.  ground, where they feed on worms and insects. A mole has very   2.  front “hands” and claws, which it uses to dig through the soil and make tunnels（地洞）. It pushes   3.  up from the tunnels to the surface （地表面），where it makes mounds （土墩）of soil called mole-hills. Gardeners sometimes watch a mole-hill. They look to see   4.  there is a slight movement which proves（证明）that a mole is at work below the surface.

Moles are almost   5. , but have a very strong sense of smell. They eat nearly all the time and cannot live for more than a few hours without   6.  . Mole tunnels help gardeners and farmers by improving the drainage. 7. ,  gardeners hate to see their lawns spoilt（破坏） by mole-hills,    8.   , they try to kill moles or make them go away.