2017年公共英語五級考試閲讀集訓鞏固習題

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The discharge of the fish, is best known as the torpedo, they have some brain cells containing panels, the poles will discharge touch panels, shock strength on the size of the fish. There is a place that is famous fish eel, eel's larger discharge intensity. The electric eel is from the head to the tail current, discharge is the change of the muscle organ. The catfish in the Nile and other African freshwater fish are electrically conductive from the end of the tail, although the current intensity is not as good as the first two species, but not very comfortable. Provide a defensive and offensive ability to discharge capacity of these fish, can repel the enemy.

h of the following call produce the strongest shock?

[A]The electric eel.

[B]The electric catfish.

[C]The newly—born electric torpedoes.

[D]The fully—grown electric ray.

are horses used to catch the electric eels?

[A]To frighten the eels.

[B]To exhaust the eels.

[C]To attract the eels.

[D]To stir the water.

electric catfish has a different electric system in that___.

[A]current moves from the head to the tail

[B]current moves from the tail to the head

[C]current moves from the left to the right

[D]current moves from the right to the left

h of the following statements is not true?

[A]Electric fish come from different families.

[B]One can get a shock by touching the electric rays in two places.

[C]The electric plates in the rays are connected with the spinal cord.

[D]The electric catfish is edible.

language of the passage is mostly___.

[A]descriptive

[B]narrative

[C]expositive

[D]critic

　　短文解析

本文介紹了幾種會放電的魚。放電的魚中，最為人所知的就是電鰩，它們腦部有一些細胞含有電板，觸摸電板的兩極就會放電，電擊的強度取決於魚的大小。還有一種著名的放電魚就是電鰻，電鰻的放電強度還要大一些。電鰻的電流是從頭部傳到尾部的.，放電器官是變化的肌肉。尼羅河中的鮎魚和其他非洲淡水魚的導電途徑是從尾到頭，雖然電流強度不如前兩種魚，但也不怎麼令人舒服。放電的能力為這些魚提供了防衞和進攻的本領，可以擊退強敵。

　　答案及解析

61.A【解析】由文章第四段中的“Another famous example is the electric fish gives all even more powerful shock.”可知。

62.B 【解析】由第四段中的“The horses ale less affected than a man would be，and when the electric eels have exhausted themselves，they Can be caught without danger.”可知。

63.B 【解析】由文章倒數第二段第一句“The electric catfish of the Nile and of other African fresh waters has a different system again by which current passes over the whole body from the tail to the head.”可知。

64.C【解析】由文章第二段可知C不對，而A、B、D文中均提到了。

65.C【解析】由全文的語氣來看，均是在解釋、闡述事情，而不是descriptive或narrative，更不是critic。