一、完形填空
Emperor penguins are the largest penguins on earth. For many months each year, they live near the sea. However, in May, the weather gets colder and ice 1 large areas of the ocean. They have to go somewhere else that is many kilometres away. There, each mother penguin lays an egg. Then all the hungry 2 must walk back to the ocean to find food. This leaves the job of keeping the eggs 3 to the father penguins.
The father penguins put eggs on top of their feet. In this way, they keep the eggs at body temperature for two months. The job is 4 easy. By July, it is winter in Antarctica. Most animals 5 warmer places, but the father penguins stay. During this time, without food, a father penguin can 6 almost half of his body weight.
By August, the mother penguin returns in time to see her baby come out of its egg. The baby is then moved to her brood pouch(育儿袋). This can be 7. If the baby falls, it can freeze quickly. So the parents must be 8. Once this is done, the hungry father penguin returns to the ocean to find food.
Over the next few months, penguin parents take turns to go to the ocean for 9. They each make the trip several times, bringing back something to eat for the baby.
By December, winter is ending. The little penguin is about five 10 old and can live on its own.

【解析】：
这是一道英语完形填空题，主要考查学生对上下文的理解、词汇辨析以及语法运用能力。题目描述了帝企鹅的生活习性，特别是在繁殖季节雌雄企鹅的分工合作。学生需要根据文章内容和语境，从给出的选项中选择最合适的词汇填入空白处。
1. 第一个空需要描述海洋被冰覆盖的情况，应选"covers"表示覆盖。
2. 第二个空根据后文的“father penguins”可以推断出这里指的是“母亲企鹅”，因此选“mothers”。
3. 第三个空描述的是企鹅爸爸的任务，即保持蛋的温暖，所以选“warm”。
4. 第四个空需要表达这个任务的难度，“never easy”表示从不简单，符合语境。
5. 第五个空描述的是大多数动物在冬季会离开去温暖的地方，所以选“leave for”。
6. 第六个空描述的是企鹅爸爸在没有食物的情况下会失去很多体重，“lose”表示失去。
7. 第七个空描述的是将小企鹅转移到育儿袋的难度，“difficult”表示困难。
8. 第八个空强调的是父母必须小心，以防小企鹅掉落，“careful”表示小心。
9. 第九个空描述的是企鹅父母轮流去海洋寻找食物，“food”表示食物。
10. 第十个空描述的是小企鹅的年龄，根据常识和文章描述，“months”表示月，符合小企鹅的成长时间线。
【答案】：
1. D
2. B
3. A
4. C
5. C
6. B
7. B
8. D
9. C
10. C