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[4 | 次の英文を読み。 以下の設問に答えよ。 (配点 60点)

Oysters are the jarest creatures tbat have been shown to “hear" the worid
around them. New researCh suggests that hearing might be commonplace 回
"mollusks an other simple marine creatures, so the impact of noise pollution from
Ships and exploration might be far greater than Currently assumed.

Jean-Charles Massabuau at the University of Bordeaux in France and his
colleagues placed 32 Pacimc oysters in tanks and exposed them to a range
Cf sounds of varying loudness with frequencies between 10 snd 20.000 hertz.
Rers tend to dlose their valves when stressed or threatened, so they were
with Ceeropcters to frack wielher they opened or dpeed     ま

snd open up or spawn at the wrong time, he says. The noise might also mask the
approach of predators.

assabuau says people tend to think about underwater noise pollution solely asa

threat to *cetaceans Iixe whales.  "(ohat we show here ia fhat the problem_ js

POSSibIy a very real one for many more animals than we imagined" he says.
“The fndings in oysters conirm that。 potentialy, any marine organism that

perceives sound can be negatively affected by humanproduced sound sources

   
 
 

問3 下線部(3)を具体的に表したとき,
中からそれぞれ選び, 記号で答えよ。        6
the frequencies between ( 3a ) and( 3b ) hertz

の 0      《⑩ 200     ⑲ 1000     加 20000

問4 下線部(4)について, この結果と してどのようなことが起こるか, 本文に尋して句

鞍点を含めて 90 字以内の日本語で書け。

問5 下線部(5)を和訳せよ。

周6 下線部6の[     ] 内の語名を並べ換えて, 文脈に合った英文を完成せよ。解
答は, 解答用紙の所定欄に下線部分のみを記入すること。

義7 本文の内容に合うものを, 次の⑦ーつの中から 1 つ選び, 記号で答えよ。
(の Oysters close their shells in response to the arrival of Gdal water.
人) Oysters bave proved to be able to distGmguish shipping noise from

understorins.

(②⑫ Underwater noise pollution js a threat to whales, not to other creatures.
) The sounds humans create could disturb food chains in many parts of the

wor】d.