A light with no more power than______by an ordinary electric light bulb becomes

游客2024-09-07  15

问题 A light with no more power than______by an ordinary electric light bulb becomes intensely strong as it is concentrated to a pinpoint-sized beam.

选项 A、as is produced
B、that produced
C、that is produced
D、produced

答案 B

解析 相当于A light with no more power than the power that is produced by…that代替power,表示相比较的事物,而选项D中没有比较对象,故不对;as表示原级比较,不与than连用,故选项A也不正确;选项C中缺少that的先行词,也是错误的。
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