()2.David said nothing, ______ simply nodded, as if understanding well.
A.and
B.but
C.or
D.so

()3.I have always wanted to go to Hainan, ______ I don’t want to stay there all week long.
A.so
B.or
C.and
D.but

()4.Wash your hands before meals, ______ you may get ill.
A.and
B.but
C.or
D.so

()5.Love from parents is like the wind—you can’t see it ______ you can feel it.
A.and
B.or
C.but
D.so

()6.Give me a chance, ______ I will give you a surprise.
A.or
B.and
C.but
D.so

五、用括号中所给单词的正确形式填空。
1. Mrs Smith always does the ______ cleaning in the evening. (day)
2. Our teacher is ______ ill. We should send her to the nearest hospital at once. (bad)
3. Dinner is ready. Please take your seats as ______ as possible. (quick)
4. You’ll forget the dancing skills ______ if you don’t practise them often. (easy)
5. When I was free, I ______ enjoyed walking around the town. (real)

Do you know all birds protect (they) by always listening and watching out for danger? At smallest sign of it, they will fly away. Birds that cannot fly are often able to swim fast, or run (quick). Some birds make themselves look (big) and more dangerous by fluffing(抖松) out their feathers.
Another important (protect) for many birds is their colours. Their feathers often have colours that match the things around their nests(巢). Some birds change colours seasons. In winter, they are white to match the snow. In summer, they are brown to match the ground.
People sometimes kill birds without (mean) to. When people cut down forests (build) houses and factories, they destroy the homes and food of birds. If the birds have nowhere else to go nothing to eat, they will die.
Pollution may make some birds (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. 2. 3. 4. 5.
6. 7. 8. 9. 10.