四、词汇运用
KEY→P15
范畴:人与自然 主题:动物研究 体裁:说明文 难度:★★★ 建议用时:4分钟 评价:/5
请认真阅读下面短文,从方框中选择适当的单词或短语,在横线上填入其正确形式。每个单词或短语仅用一次。
because of meal bring back big study
Scientists found fossils(化石) of a huge snake in India. This snake, named Vasuki, lived 47 million years ago. With an estimated(估计的) length of 11~15 meters, it might be longer than a school bus and weighed up to 1,000 kg.
Researchers 1. its bones and guessed its size. Vasuki was even 2. than the largest Asian snake today which is 10 meters.
This huge snake lived in forests. 3. its huge body, it moved slowly and couldn't attack(攻击) quickly. Instead, it used its strong body to press animals until they died. Scientists also found bones of catfish, whales, and other animals nearby. Maybe these were its 4. .
Snakes need warm weather to grow very big, so does that mean global(全球的) warming could 5. huge snakes?

1. studied 2. bigger 3. Because of 4. meals
5. bring back
科学家在印度发现了一个蛇化石，本文主要介绍了这条蛇的外形和生活习性。