理工类A级试卷押中题目阅读理解:
第二篇 Listening to Birdsong
A male zebra finch chirps away to himself. Suddenly he notices a female bird, nearby: He realizes he has an audience and immediately changes his song. Can the female tell the difference in his performance? According to a new study, the female zebra finch knows. And she prefers the special trills he creates when he sings to her. A male zebra finch changes his song when singing to a female in ways that people can barely detect. But the female finch can tell the difference.
Scientists had noticed slight variations in the songs of male zebra finches based on whether they were singing alone or whether there was a female nearby. With an audience, the males sped up the pace of their songs and controlled the notes they used.
For this Study, researchers Sarah C. Woolley and Allison Doupe at the University of California, San Francisco decided to focus attention on the listening females, which have not been
well studied in the past.
In the study, Woolley and Doupe set up a long cage with a sound speaker at each end. One broadcast the sound of a male zebra finch singing to himself, like someone singing in the shower. The other speaker broadcast a male performing for a female audience, as if he was giving a concert.
Female birds were placed between the two speakers. Some of the birds had mates, others didnt. The females shifted around a bit, and then most of them hopped over to sit beside just one speaker. All the birds that made a clear choice liked songs meant for a female audience, even if theyd never met the male.
Mated females also had a chance to listen to two different performance songs, one from an unknown male, and one from their mate. They spent more time listening, to the concert version of their mates songs. This suggests that after a while, females learn to recognize--and preferthe songs of their mates.
Scientists then studied the brains of the females. They found certain areas of the brain perked up when the birds listened to the concert songs. These brain areas may be involved in recognizing and evaluating the songs, and storing the memories of them.
This research deals with whats called directed communication, when the communicator, or sender, focuses the message for a specific audience. One example is the way moms speak to their babies. Mothers around the world use the same sort of high-pitched sing-song chatter, and the babies respond best to those sounds. Songbirds are one of the only other species known to learn their communication, in this case their songs.
36. What does the first paragraph say about zebra finches?
A Male zebra finches like to sing to female zebra finches.
B Male zebra finches sing louder than female zebra finches.
C Male zebra finches change their songs in female zebra finches presence.
D Male zebra finches like to listen to female zebra finches sing.
37. What did the researchers find in their study of female zebra finches?
A Female finches liked songs male finches sang for them.
B Female finches only liked songs male finches sang for their mates.
C Female finches liked to listen to songs from both speakers.
D Female finches chose the best male singers as their mates.
38. What is meant by concert songs in the seventh paragraph?
A Songs sung by zebra finches at a concert.
B Songs sung by male finches for female finches.
C Songs sung by female finches for male finches.
D Songs sung by male finches to many female finches.
39. What is NOT tree of directed communication?
A The sender of a message has a specific audience.
B Male zebra finches sing to female finches.
C Mothers talk to their babies.
D Male zebra finches sing to themselves.
40. Which of the following can best reflect the theme of the passage?
A Chirping away.
B Birdsongs as communication.
C Zebra finches and their life.
D Enjoying birdsongs.
人教版九年级下册英语课本Unit 14 Section B 1c课后答案
人教版九年级下册英语课本Unit 13 Section A 3b课后答案
人教版九年级下册英语课本Unit 12 Section B 2b课后答案
人教版九年级下册英语课本Unit 13 Section B 2b课后答案
人教版九年级下册英语课本Unit 11 Section A 2b课后答案
人教版九年级下册英语课本Unit 12 Section B 1c课后答案
人教版九年级下册英语课本Unit 12 Section A 3a课后答案
人教版九年级下册英语课本Unit 11 Section A 3a课后答案
人教版九年级下册英语课本Unit 12 Section B 1d课后答案
人教版九年级下册英语课本Unit 12 Section B 1a课后答案
人教版九年级下册英语课本Unit 11 Section A 2a课后答案
人教版九年级下册英语课本Unit 13 Section B 2c课后答案
人教版九年级下册英语课本Unit 12 Section A 3b课后答案
人教版九年级下册英语课本Unit 12 Section B Self Check课后答案
人教版九年级下册英语课本Unit 13 Section A 4b课后答案
人教版九年级下册英语课本Unit 13 Section B Self Check课后答案
人教版九年级下册英语课本Unit 11 Section A 3b课后答案
人教版九年级下册英语课本Unit 14 Section A 3b课后答案
人教版九年级下册英语课本Unit 12 Section A 1b课后答案
人教版九年级下册英语课本Unit 14 Section A 3a课后答案
人教版九年级下册英语课本Unit 12 Section A 2a课后答案
人教版九年级下册英语课本Unit 14 Section B 1d课后答案
人教版九年级下册英语课本Unit 13 Section A 3a课后答案
人教版九年级下册英语课本Unit 12 Section B 2c课后答案
人教版九年级下册英语课本Unit 14 Section A 4a课后答案
人教版九年级下册英语课本Unit 13 Section B 1c课后答案
人教版九年级下册英语课本Unit 12 Section B 2d课后答案
人教版九年级下册英语课本Unit10 SectionB 2课后答案
人教版九年级下册英语课本Unit 14 Section A 2a课后答案
人教版九年级下册英语课本Unit 13 Section A 4a课后答案