People usually sing because they like music or because they feel happy . They express their happiness by singing . When a bird sings , however , its song usually means such more than that the bird is happy . Birds have many reasons for singing . They sing to give information . Their songs are their language
The most beautiful songs are sung by male birds . They sing when they want to attract female birds . It is their way of singing that helps them look for a wife
Birds also sing to tell other birds to keep away . To a bird , his tree or even a branch of tree is his home . He does not want strangers to come near him , so he sings to warn them
If a bird can not sing well , he usually has some other means of giving important information . Some birds dance , spread out their tails or make others sing . One bird has a most unusual way of finding a wife . For example , it builds a small garden of shells and flowers
1. What do most birds usually do if they can not sing well ?
A. Warn other birds to go away B. Find a wife
C. Fly high in the sky D. Give their information in another way
2. What is one bird's unusual way of attracting a female bird ?
A. It dances B. It spreads out its tail
C. It use shells and flowers to make a garden D. It searches for a wife
3. Why do people usually sing ?
A. They feel happy B. They like birds C. They want to tell a story D. They study music
4. Which birds sing the most beautiful songs ?
A. Birds in a good temper B. Female birds C. Male birds D. Female birds which attract male birds
5. What warning does a bird sometimes sing to give ?
A. A warning to come quickly B. A warning to keep away
C. A warning to be dangerous D. A warning to stop singing
Đáp án D
Kiến thức về liên từ
Đề bài: Căn phòng trở nên càng lúc càng nóng hơn. Tôi phải cởi áo len ra.
A. Trừ khi căn phòng trở nên nóng hơn, tôi phải cởi áo len ra.
B. Mặc dù căn phòng trở nên nóng hơn, tôi phải cởi áo len ra.
C. Căn phòng trở nên nóng hơn nhưng tôi phải cởi áo len ra.
D. Căn phòng trở nên nóng hơn nên tôi phải cởi áo len ra.