2. 外语
  3. Although the lesser cornstalk borer is widely distributed, control of them is necessary only in the south.

Although the lesser cornstalk borer is widely distributed, control of them is necessary only in the south.

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问题 Although the lesser cornstalk borer is widely distributed, control of them is necessary only in the south.
选项 A、the lesser cornstalk borer is widely distributed, control of them is
B、widely distributed, measures to control the lesser cornstalk borer are
C、widely distributed, lesser cornstalk borer control is
D、the lesser cornstalk borer is widely distributed, measures to control it are
E、it is widely distributed, control of the lesser cornstalk borer is
答案D
解析 A中them不知指代何物，在它之前并没有复数名词。E中的it指代control，而“被广泛分布的”只可能是the lesser cornstalk borer而不是control。因此，E错。B、C都使用了从句的省略形式，而其语法上的主语，B中的measure和C中的control(control是名词词组的中心词)与其逻辑上主语the lesser cornstalk borer不一致，故排除。D中，it指the lesser cornstalk borer,measuresto control it符合表达习惯。
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