2. 外语
  3. The purpose of a screwdriver’s handle is Ato allow one to Bhold the screwdriver and to Camplify the force with which one turns i

The purpose of a screwdriver’s handle is Ato allow one to Bhold the screwdriver and to Camplify the force with which one turns i

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问题 The purpose of a screwdriver’s handle is Ato allow one to Bhold the screwdriver and to Camplify the force with which one turns it Dfor drive a screw.
选项 A、 
B、 
C、 
D、 
答案D
解析 For is incorrect where to is needed in an infinitive structure. Correction: to.
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