题目内容
Is this the reason ______ at the meeting for his carelessness in his work?
| A．What he explained | B．how he explained |
| C．he explained | D．why he explained |
C
解析试题分析：句意：这是他在会上为他工作的粗心大意所解释的原因吗？根据句意这里需要一个定语从句，修饰先行词the reason 。在定语从句中先行词the reason作explained的宾语，用关系代词that 或which，也可省略；how、why都是关系副词不符合，what不是定语从句的关系词，排除A, B, D。故选 C。
考点: 考查定语从句的用法。
挑战100单元检测试卷系列答案“Youth”is regarded as a time in their life fun ,passion, and imagination seem limitless.
| A．that | B．which | C．when | D．where |
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| A．where | B．when | C．what | D．that |
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| A．which | B．when | C．where | D．that |
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| A．their | B．whose | C．which | D．whom |
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| A．whom | B．their | C．which | D．whose |
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| A．that | B．where | C．which | D．when |
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| A．I will be convenient | B．it will be convenient |
| C．I am convenient | D．it is convenient |
—Mary，turn the heat down，________ burn.
—OK.Mum.
| A．the cake will | B．or the cake will |
| C．will the cake | D．and the cake will |