This experiment will show us ________ can be used in the modern laboratory．A.that you have inventedB.how that you have inventedC.that how you have inventedD.how what you have invented
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D解析考查宾语从句和主语从句。本句话的意思为：这个实验将告诉我们在现代实验室中我们如何才能运用到发明的东西。how引导的是show的宾语从句，同时在宾语从句中又使用了what所引导的主语从句，what作invented的宾语。