劍橋雅思17聽力第三套題目第四部分由10道提綱型填空題組成。除了第36題定位比較困難，第40題拼寫比較困難之外，其他題目的難度都還可以接受，屬于考試中偏簡單的類型。

劍橋雅思17 Test3 Part4聽力答案解析

第31題答(da)案：mud

對(dui)應原文：Another theory for the regular appearance and disappearance of birds was that they spent winter hidden in mud till the weather changed and food became abundant again.

答(da)(da)案(an)解析：聽到another theory（對應題干上的or）意識到答(da)(da)案(an)即將(jiang)到來，空前介詞(ci)in原詞(ci)出(chu)現，根據修飾關系(xi)鎖定(ding)答(da)(da)案(an)為mud。

第(di)32題答案(an)：feathers

對應原文：He observed that in the autumn,small birds called‘redstarts’began to lose their feathers

答案(an)解析：聽到autumn意識到答案(an)即將到來，空前修飾詞(ci)loss與lose詞(ci)性(xing)替換，很容易鎖定答案(an)為feathers。

第33題答案(an)：shape

對應原文(wen)：These assumptions are understandable given that this pair of species are similar in shape

答案解析：聽到(dao)(dao)(dao)assumptions意識到(dao)(dao)(dao)答案即將到(dao)(dao)(dao)來，空前修飾詞similiar原詞出現，甚至句子語序都沒有任何改變，很容易鎖定答案為shape。

第34題答案：moon

對應原文(wen)：Charles Morton,in the seventeenth century.He wrote a surprisingly well-regarded paper claiming that birds migrate to the moon and back every year.

答案解析：聽到(dao)(dao)Charles Morton和17th century意識(shi)到(dao)(dao)答案即(ji)將到(dao)(dao)來，空前詞fly與(yu)migrate同義替換(huan)，介詞to原詞出現(xian)，由此鎖(suo)定答案為(wei)moon。

第35題答案：neck

對應原(yuan)文：This particular stork made history because of the long spear in its neck which incredibly had not killed it

答(da)案解析：stork和spear均可提示大家答(da)案即(ji)將(jiang)到來，空(kong)前詞in its在錄音中(zhong)原詞出(chu)現，再(zai)加上事先(xian)可以根據題干猜測出(chu)空(kong)上應(ying)該填某個(ge)身體部(bu)位(wei)，由此確定答(da)案為neck。

第36題答案：evidence

對應原文：This was a truly defining moment in the history of ornithology  it was the first evidence that storks spend their winters in sub-aharan Africa.

答(da)(da)案解析：這(zhe)道(dao)題難(nan)度較大。一是(shi)沒有(you)關鍵詞(ci)提示大家答(da)(da)案即將到來，二是(shi)空前(qian)詞(ci)there had been no的(de)替換較為靈活。如果當(dang)時沒有(you)注意(yi)到first的(de)話，就只能根據(ju)詞(ci)性鎖定幾(ji)個(ge)單詞(ci)之后再(zai)去篩選。

第(di)37題答案：destinations

對應原(yuan)文：Before this,very little information was available about the actual destinations of particular species

答(da)案(an)(an)解(jie)析：little提示(shi)大家答(da)案(an)(an)即將到來，空前介詞about在錄音中(zhong)原詞出(chu)現，根據修飾(shi)關系，確定destinations為正(zheng)確答(da)案(an)(an)。

第38題答案：oceans

對應原文：This idea came about because it seemed impossible that small birds weighing only a few grams could fly over vast oceans

答(da)案(an)解析：聽(ting)到(dao)(dao)small birds意識到(dao)(dao)答(da)案(an)即將到(dao)(dao)來，空前形容詞huge與(yu)vast替換，根據修飾關系，確(que)定(ding)oceans為正確(que)答(da)案(an)。

第39題答(da)案：recovery

對應原(yuan)文：This is still common practice today and relies upon what is known as‘recovery’

答(da)案解(jie)析：雖然沒有(you)明確的關(guan)鍵詞(ci)提示(shi)大家答(da)案即將到(dao)來。但題干中(zhong)詞(ci)匯的替換(huan)都比較(jiao)明顯(xian)，depend on對應(ying)rely on，called對應(ying)known，由此鎖定recovery為正確答(da)案。

第40題答案：atlas

對(dui)應原(yuan)文：In 1931,an atlas was published showing where the most common species of European birds migrated to

答(da)案解析：聽(ting)到(dao)1931年意識到(dao)答(da)案即將到(dao)來(lai)，從題干可(ke)以推(tui)測(ce)出空(kong)上應該填名詞。因為(wei)句子結構幾乎沒有改(gai)變，因此很(hen)容易(yi)鎖定atlas，但要拼寫出來(lai)卻不太容易(yi)。

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