题目

Passage 5Scientists say crocodiles have outlived dinosaurs 1.___some 65 million years. One reason why they are such good 2.___(survive) is that they can go for a very long time without eating. And they are expert hunters.3.___(use) their strong jaws to bite their prey(猎物) and then swallow it whole. When they lose a tooth they grow one right back. A crocodile can go through 8,000 4.___(tooth) in one life time!What does the expression "crocodile tears" mean? Simply put, "crocodile tears" are fake sadness. You pretend 5.___(cry) and feel bad for something when in fact you could not care 6.___(little). A great word to describe it is insincere. The phrase "crocodile tears" comes from an old myth that crocodiles would shed tears while eating their prey. A religious worker wrote that 7.___a crocodile found a man by the water, it would kill him if it could. Then the crocodile would cry tears on the man, but then finally swallow 8.___(he). Another myth suggests 9.___crocodile is very clever indeed. Crocodiles, the story goes, would cry tears as a false show of guilt or sadness to trick their prey. The prey would come closer and then become dinner.Scientists explain that crocodiles DO create tears, but they do not cry. The tears help to clean their eyes. Crying is purely emotional and it 10.___(reserve) for us humans.

Passage 5 Scientists say crocodiles have outlived dinosaurs 1.___some 65 million years. One reason why they are such good 2.___(survive) is that they can go for a very long time without eating. And they are expert hunters.3.___(use) their strong jaws to bite their prey(猎物) and then swallow it whole. When they lose a tooth they grow one right back. A crocodile can go through 8,000 4.___(tooth) in one life time! What does the expression "crocodile tears" mean? Simply put, "crocodile tears" are fake sadness. You pretend 5.___(cry) and feel bad for something when in fact you could not care 6.___(little). A great word to describe it is insincere. The phrase "crocodile tears" comes from an old myth that crocodiles would shed tears while eating their prey. A religious worker wrote that 7.___a crocodile found a man by the water, it would kill him if it could. Then the crocodile would cry tears on the man, but then finally swallow 8.___(he). Another myth suggests 9.___crocodile is very clever indeed. Crocodiles, the story goes, would cry tears as a false show of guilt or sadness to trick their prey. The prey would come closer and then become dinner. Scientists explain that crocodiles DO create tears, but they do not cry. The tears help to clean their eyes. Crying is purely emotional and it 10.___(reserve) for us humans.

题目解答

答案

以下是各空格的正确答案及核心解析，结构化呈现：

  1. 介词选择

    • 填入：by
    • 解析：表示“多出……时间”，固定搭配 “outlive... by...” 意为“比……多活……”。

  2. 名词复数形式

    • 填入：survivors
    • 解析：“such good”后接可数名词复数，指“如此优秀的幸存者”，由动词 survive 转换而来。

  3. 非谓语动词（现在分词）

    • 填入：using
    • 解析：作伴随状语，主语 they 与 use 为主动关系，故用现在分词形式。

  4. 可数名词复数

    • 填入：teeth
    • 解析：数字 8,000 后需接复数名词，tooth 的复数为不规则变化 teeth。

  5. 动词不定式结构

    • 填入：to cry
    • 解析：固定搭配 pretend to do sth.，意为“假装做某事”。

  6. 固定短语

    • 填入：less
    • 解析：could not care less 为习语，意为“完全不在意”，是最高级表达。

  7. 连词引导从句

    • 填入：if / when / once（任选其一）
    • 解析：引导条件或时间状语从句，语义通顺即可。例如：
      • if → 表假设
      • when → 表时间
      • once → 表“一旦”

  8. 宾格代词

    • 填入：him
    • 解析：动词 swallow 后需接宾语，人称代词 he 的宾格形式为 him。

  9. 定冠词特指

    • 填入：the
    • 解析：特指前文已提及的“crocodile”，故用定冠词 the。

  10. 被动语态结构

    • 填入：is reserved
    • 解析：固定搭配 be reserved for，意为“专为……保留”，主语 it 为单数，故用 is reserved。

最终完整填空结果如下：

Scientists say crocodiles have outlived dinosaurs by some 65 million years. One reason why they are such good survivors is that they can go for a very long time without eating. And they are expert hunters, using their strong jaws to bite their prey (猎物) and then swallow it whole. When they lose a tooth they grow one right back. A crocodile can go through 8,000 teeth in one lifetime! What does the expression "crocodile tears" mean? Simply put, "crocodile tears" are fake sadness. You pretend to cry and feel bad for something when in fact you could not care less. A great word to describe it is insincere. The phrase "crocodile tears" comes from an old myth that crocodiles would shed tears while eating their prey. A religious worker wrote that if/when/once a crocodile found a man by the water, it would kill him if it could. Then the crocodile would cry tears on the man, but then finally swallow him. Another myth suggests the crocodile is very clever indeed. Crocodiles, the story goes, would cry tears as a false show of guilt or sadness to trick their prey. The prey would come closer and then become dinner. Scientists explain that crocodiles DO create tears, but they do not cry. The tears help to clean their eyes. Crying is purely emotional and it is reserved for us humans.

解析

本题主要考查了介词、名词、非谓语动词、动词不定式、固定短语、连词、代词、冠词以及被动语态等知识点。解题时需要根据句子的语境、语法规则和固定搭配来确定每个空格应填的内容。

  1. 第一空：
    • 考查介词的固定搭配。“outlive... by...”是固定用法，表示“比……多活……”，这里说鳄鱼比恐龙多活了大约6500万年，所以用介词“by”。
  2. 第二空：
    • 考查名词的单复数形式。“such good”后面需要接可数名词复数，“survive”是动词，其名词形式是“survivor”，复数形式为“survivors”，表示“幸存者”。
  3. 第三空：
    • 考查非谓语动词。句子中已有谓语动词“are”，所以这里要用非谓语动词形式。“use”和主语“they”之间是主动关系，作伴随状语，用现在分词“using”。
  4. 第四空：
    • 考查可数名词的复数形式。“8,000”是具体的数字，后面要接可数名词复数，“tooth”的复数是不规则变化“teeth”。
  5. 第五空：
    • 考查动词不定式结构。“pretend to do sth.”是固定搭配，意为“假装做某事”，所以这里用“to cry”。
  6. 第六空：
    • 考查固定短语。“could not care less”是一个习语，意思是“完全不在意”，是最高级的表达形式。
  7. 第七空：
    • 考查连词引导从句。这里需要一个连词来引导条件或时间状语从句，“if”表示假设，“when”表示时间，“once”表示“一旦”，语义通顺即可，所以可以填入“if / when / once”。
  8. 第八空：
    • 考查宾格代词。“swallow”是动词，后面需要接宾语，人称代词“he”的宾格形式是“him”。
  9. 第九空：
    • 考查定冠词的用法。这里特指前面提到的“crocodile”，所以用定冠词“the”。
  10. 第十空：
    • 考查被动语态结构。“be reserved for”是固定搭配，意为“专为……保留”，主语“it”是单数，所以用“is reserved”。