Question

【题目】UCLA scientists report for the first time on the only known frog species that can communicate using purely ultrasonic(超声）calls, whose frequencies are too high to be heard by humans. Known as Huia cavitympanum, the frog lives only on the Southeast Asian island of Bomeo(婆罗洲）.

Ultrasounds are high-pitched sounds more than 20 kilohertz(kHz) in frequency, which exceeds the upper limit of sounds detectable by humans and is far higher than the 5 to 8 kHz frequencies most amphibians (两栖动物)，reptiles and birds are capable of hearing or producing. Key parts of the ear must be specially adapted to detect ultrasounds.

The frogs can hear sounds up to 38 kilohertz, the highest frequency that any amphibian species has been known to hear, the scientists report. Humans can hear up to about 20 kHz and typically talk at 2 or 3 kHz.

While most of the more than 5，000 frog species worldwide have eardrums that are flat on the side of the head, Huia cavitympanum has eardrums recessed in the side of the skull, similar to mammals.

Peter Narins, UCLA distinguished professor of physiological science and of ecology and evolutionary biology, and Victoria Arch, a UCLA graduate student in ecology and evolutionary biology, spent several nights in the remote area where the frogs live.

" We had very little information suggesting that they would be in this location，" said Arch, lead author of the study. " We found them our first night out. "

The study was published on April 29 in the online journal PLOS ONE, a publication of the Public Library of Science, and is available at
http://dx. plos. org/10. 1371/journal, pone. 05413.

【1】 Huia cavitympanum mainly live __________.

A. in all over the world

B. in many parts of China

C. only on the Southeast Asian island of Borneo

D. only on the certain countries' marsh

【2】 This kind of new-found frog can hear each other with up to __________ kHz ultrasounds.

A. 2-3 B. 5 -8

C. more than 20 D. 38

【3】 If people can hear ultrasounds as frogs do, they should __________.

A. hear as frogs do carefully

B. have a pair of good enough ears like frogs

C. concentrate their energy on them

D. turn them into common sounds

【4】 According to the passage we can infer that __________.

A. the result of study is concluded not easily

B. some scientists have done a lot of work for the result

C. all the frogs have the ability with 38 kHz frequency

D. this kind of frogs is as important as animals

【5】 This passage probably appears __________.

A. on the newspaper B. on the textbook

C. on the website D. on the report

Answer 1

【答案】【1】C

【2】D

【3】B

【4】A

【5】C

【解析】[语篇解读]据美国物理学家组织网站报道，美国科学家最近在婆罗洲岛发现了一种奇特的青蛙，这种名为凹耳胡蛙（Huiacavitympanum)的青娃可以通过超声波来互相交流。这一新发现对于治疗人类听力障碍具有重要的启发意义。

【1】细节判断题。根据文章第一段Known as Huia cavitympanum, the frog lives only on the Southeast Asian island of Borneo可知，以“凹耳胡蛙”而闻名的青娃仅仅生活在马来西亚婆罗洲亚洲岛东南一带。

【2】细节理解题。根据文章第三段The frogs can hear sounds up to 38 kilohertz , the highest frequency any amphibian species has been known to hear可知，青蛙相互之间可以听到髙达38kHz的超声波所传递的信息。

【3】细节判断题。根据文章第二段Key parts of the ear must be specially adapted to detect ultrasounds 可知,要想听到足够髙的超声波，就必需得有一双好耳朵。

【4】推理判断题。根据文章倒数第二段“We had very little information suggesting that they would be in this location. ” “ We found them our first night out”可知，人们开始对这种青蛙几乎不了解，不知道它们是否在这个地区，找到它们用了整个晚上。

【5】细节判断题。根据文章最后一段The study was published on April 29 in the online journal PLOS ONE, a publication of the Public Library of Science, and is available at http: //dx. plos. org/10. journal, pone. 0005413. 可知，这篇文章发表在网站上。