问答题 Listen to the following passage. Altogether the passage will be read to you four times. During the first reading, which will be done at normal speed, listen and try to understand the meaning. For the second and third readings, the passage will be read sentence by sentence, or phrase by phrase, with intervals of 15 seconds. The last reading will be done at normal speed again and during this time you should check your work. You will then be given 2 minutes to check through your work once more.

【正确答案】

【答案解析】[听力原文]

Sea Horses

{{U}}Sea horses are unusual parents.{{/U}} The female sea horses lay the eggs, but unlike other creatures, it's the males that give birth to the young.
Male sea horses have a fold of skin on their bellies that forms a pocket, called a {{U}}brood pouch{{/U}}. During the breeding season, the {{U}}sea horse's{{/U}} pouch {{U}}swells{{/U}} to receive eggs. A female sea horse lays up to {{U}}200{{/U}} eggs at a time in the pouch. Then she swims off, leaving her male partner to care for the developing eggs and give birth to young sea horses.
It takes from two to six weeks for the eggs in the male's pouch to develop. During this time the male hides in sea grass. His {{U}}big pouch{{/U}} makes it difficult for him to swim, so the male often uses his tail to grasp a piece of sea grass. Firmly, gripping the grass, he will stay perfectly still for hours or even days. The male sea horse will change his color to blend with his {{U}}surroundings{{/U}} and avoid being seen by {{U}}predators{{/U}}.