B. 根锯课文的内容在每个空白处填入一个怡当的词。

In ten minutes I had seen all that could be seen in the fish, and started to look for the Professor—who had, however, left. Half an hour  61 —an hour—another

hour; the fish began to look disgusting. I turned it  62 and around; looked it in the face—ghastly; from  63 beneath, above, sideways—just as ghastly. I must not use a magnifying  64 , nor instruments of any kind. Just my two hands, my two eyes,  65 the fish: it seemed a most limited  66 of study. With a feeling of desperation again I looked at that  67 . I pushed my finger down its throat to feel    

  68 sharp the teeth were. I began to count the scales in the different rows, 69  I was convinced that was nonsense. At last a happy thought struck me—I would draw the fish; and now with surprise I  70 to discover new features in the creature. Just then the Professor returned.

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