71. The coal industry is important to every industrial nations because most other industries are directly or indirectly dependent on it.

答案：A

分析及考點：同樣表示每個，所有，every應該跟名詞單數(shù)，而nations是復數(shù)，應該改成all

參考譯文：煤礦工業(yè)對所有國家來說都是重要的，因為大多數(shù)其他工業(yè)都直接或間接的依賴它。

72. The brightly colored kingfisher that perches until it sights a fish, then dives into the water to catch its prey.

答案：B

分析及考點：先看主謂賓，then連接兩個句子。所以that perches實際不成立定語從句，應該把that去掉。

參考譯文：具有光亮顏色的翠鳥棲息在高處，直到它看到魚，它就會扎進水里把獵物抓住。

73. Neptune circles the Sun once every 164.8 Earth years, and its day —— one rotation its axis —— is 15.8 hours.

答案：C rotation around its axis

分析及考點：C的錯誤比較明顯，B（every）的這種用法應記住，很容易被迷惑。

參考譯文：

74. Observable comets are occasionally attracted toward the inner Solar System by the fields gravitational of nearby stars and giant molecular clouds.

答案：C

分析及考點：次序顛倒。應改為gravitational fields，重力場。

參考譯文：可以觀測的的彗星偶爾會受到附近星星和巨大的星云的重力場作用而吸引到太陽系內(nèi)部來。

75. A single bacterium has the potential to produce 16 million copies of themselves in a day.

答案：D

分析及考點：代詞指代問題。A single bacterium的代詞要用itself

參考譯文：單個細菌有能力在一天內(nèi)生產(chǎn)16百萬個它自身的復制品。

76. Atoms are held together by the electrical forces of attraction between each negative electron and a positive protons within the nucleus.

答案：C

分析及考點：名詞單復數(shù)混亂。Protons復數(shù)，所以應該把a去掉。

參考譯文：原子核中每一個負電荷電子和一個正電荷質(zhì)子之間的電的作用力的相互吸引，把原子結(jié)合在一起。

77. The original aim of encyclopedias was to provide a general educational.

答案：D

分析及考點：一個詞的詞性混用。educational 這里應該是名詞形式，所以改成education.

參考譯文：百科全書的最初目的是提供普遍的教育。

78. Icebergs are usually white, blue, or green, even although some are black due to rock material incorporated in them .

答案：B

分析及考點：轉(zhuǎn)折連詞的用法。只有even though和although，沒有 even although 的表述。

參考譯文：冰山一般是白色、藍色或者綠色的，盡管有些是黑色的，那是因為有巖石材料夾雜在里面。

79. Both adult ladybugs and their larvae are voracious eaters of aphids, scale insects, and another plant pests.

答案：D

分析及考點：another與other混用。表示其他的意思，超過一個應該用other，another表示另一個的意思。

參考譯文：成年瓢蟲和他們的幼蟲都是極其喜歡吃蚜蟲，介殼蟲和其他植物害蟲。

80. Early English burlesque often ridiculed celebrated literary works and sentimentally drama.

答案：D

分析及考點：詞性混用。修飾名詞用形容詞，所以改成sentimental.Celebrated是獨立的形容詞，意為著名的

參考譯文：早期的英語滑稽表演通常嘲笑那些著名的文學作品和感人的戲劇。