六、根据短文内容,在文中空白处填入1个适当的单词,或用括号内所给单词的正确形式填空。
Do you know all birds protect
themselves
1
(they) by always listening and watching out for danger? At
the
2
smallest sign of it, they will fly away. Birds that cannot fly are often able to swim fast, or run
quickly
3
(quick). Some birds make themselves look
bigger
4
(big) and more dangerous by fluffing(抖松) out their feathers.
Another important
protection
5
(protect) for many birds is their colours. Their feathers often have colours that match the things around their nests(巢). Some birds change colours
with
6
seasons. In winter, they are white to match the snow. In summer, they are brown to match the ground.
People sometimes kill birds without
meaning
7
(mean) to. When people cut down forests
to build
8
(build) houses and factories, they destroy the homes and food of birds. If the birds have nowhere else to go
and
9
nothing to eat, they will die.
Pollution may make some birds
die
10
(die) too. Birds that eat fish from polluted water get poison in their bodies. Then they cannot lay healthy eggs. New birds can't be born.
1.
themselves
2.
the
3.
quickly
4.
bigger
5.
protection
6.
with
7.
meaning
8.
to build
9.
and
10.
die
