题目内容：
Questions refer to the following letter.Dear Editor:
Iam writing in response to your article on nature tour companies in Costa Rica. In your article, the company Costa Rica Discoveries was given a negative review. You stated that its tours are led by inexperienced tour __ _41_______ , my experience with Costa Rica Discoveries was very positive.
My tour guide was very knowledgeable about Costa Rica's unique ecosystem, giving thorough explanations and ____42______questions in detail. I would highly_____43_____ taking a Costa Rica Discoveries tour to anyone wishing to visit the country.
第41题答案是__________ A．Then
B．Consequently
C．In addition
D．However
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答案解析：