問題詳情


(B) Of all the animal kingdom, sharks perhaps possess the most __20__ teeth. Most sharks havemultiple rows of teeth along both upper and lower jaws, which often contain as many as thirty teeth perrow, __21__ hundreds in total. The teeth themselves range from thin and needle-like ones for grippingprey to flat ones for crushing shells and bones. __22__, sharks’ teeth are not just limited to their mouths.The millions of tiny, sharp scales that cover their skin are miniature __23__ of teeth, protecting themfrom damage and parasites, as well as enabling them to move faster through the water.So, next time you go to the dentist with a toothache, count yourself lucky because, __24__ yourteeth may be quite plain compared to some animals, at least you don’t have as many teeth to worry aboutas a shark.
20.
(A)lucrative
(B) indispensable
(C)relentless
(D) formidable

參考答案

答案：D[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

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