【題目】When Edison was a child, he was always asking questions and ______ new ideas.

A. trying out B. try out C. tried out D. trying

【答案】A

【解析】

試題分析：句意：當(dāng)愛迪生還是個(gè)孩子的時(shí)候，他總是問一些問題，嘗試新的思路。try out嘗試；try試圖，努力。結(jié)合并列成分asking，所以選A。

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