题型:阅读理解 题类:常考题 难易度:普通
2016届黑龙江大庆铁人中学高三上学期期中英语试卷
Dolphins(海豚) live in a dark underwater world. It's often impossible to see each other or anything else around them, so sound plays an important role in their survival. To communicate with each other, dolphins produce all kinds of sounds.
Only other dolphins understand what the sounds mean. Scientists haven't uncovered their secret communication, except for one kind of whistle. It might last less than a second, but this whistle is a big deal. Why? Because these whistles are actually names of dolphins - and every dolphin has one. Scientists call these sounds a “signature whistle.” When other dolphins hear the whistle, they know which dolphin is calling.
Dolphins often hunt by themselves but still need to stay connected to the group. Since they can't always see each other, dolphins use their signature whistles to check in with other dolphins hundreds of yards away. “In coastal areas, dolphins exchange whistles even when they're a third of a mile apart,” says Greg Campbell, who studies animals. That means dolphins shout out to group members that might be nearly five football fields away.
What's amazing is who names the baby dolphin. Not the mother. Not an auntie dolphin or another group member. Scientists believe the baby dolphin itself comes up with the signature whistle. Like human babies, a baby dolphin plays with sounds throughout its first year. While testing its sound skills, a baby dolphin is doing something amazing. It's creating or figuring out its signature whistle. How or why it chooses its signature whistle is not clear. Studies show that most of the time the signature whistle is nothing like its mother's or group members' whistles.
When the baby dolphin is about a year old, its signature whistle is set. It repeats it often so the other dolphins learn to recognize it.
Deciphering(破译) dolphin names is just the beginning of figuring out what dolphins communicate about. Do they chat about sharks? Discuss the tides? Maybe they even have a name for people. Someday scientists are to decipher the rest of dolphins' communication.
Guest Services Front Gate Guest Services can help you with anything from finding out what time your favourite show starts to purchasing tickets. The Guest Services location inside Front Gate also serves as a message centre, lost children's area and lost and found. Canada's Wonderland does not offer personalized public paging (传呼). | Food & Drink Options Shops are located throughout Canada's Wonderland. Picnic baskets and coolers are welcome at the shelter located outside Wonderland on the north side of our Front Gate. Outside food and drinks are not allowed in the park. Bottled water may be brought into the Park. |
ATMs ATMs are located just inside the Park beside Stroller, Locker and Wheelchair Rentals at the Front Gate, as well as KidZville (beside Guest Services), Splash Works (two locations), and outside Thunder Run. | Pet Care A pet care facility is located outside our Front Gate on the south side for a daily fee. Water and air-conditioned shelters are provided. Guests are asked to provide food and exercise. |
First Aid If you need medical assistance, tell any park employee who will call First Aid and have them come to your location. | Stroller, Locker and Wheelchair Rentals Stroller, locker and wheelchair rentals are available inside the Park at the Front Gate, beside Thrills Are Wonderland. |
HIQ Smoking Policy Smoking is not permitted while riding or standing in line for rides or in any of the children's areas or the Water Park. Smoking is permitted in designated (指定的) areas only. | Failure to observe all Park rules could result in being driven out of the Park without refund. |
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