【題目】The guide told them not to eat the mushroom, ______ that there was a risk of food poisoning.

A. explainedB. explainingC. to explainD. having explained

【答案】B

【解析】

考查非謂語動詞。句意：導游告訴他們不要吃蘑菇，并解釋說有食物中毒的危險。本句已經(jīng)存在謂語動詞，且句中沒有連詞，故explain只能作非謂語動詞，與邏輯主語構(gòu)成主謂關(guān)系，用現(xiàn)在分詞，作伴隨狀語。故選B。

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