A theory often involves an imaginary model that helps scientists picture the way

游客2024-06-26  11

问题 A theory often involves an imaginary model that helps scientists picture the way an observed event could(produce)______.

选项

答案 be produced

解析 本题考查动词的语态变化。在修饰the way的定语从句中,主语an observed event与谓语produce之间存在逻辑上的被动关系,需要使用produce的被动式;况且跟在情态动词could的后面,所以用be produced。
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