________ the news, so far, has been good, there may be days ahead when it is bad.
A．WhileB．WhenC．BecauseD．If
A

試題分析：考查連詞。題意：雖然到目前為止都是好消息，但是可能有壞消息的日子還在后頭呢。while引導(dǎo)從句放在句首，相當(dāng)于though或although，表示“讓步”。選擇A項(xiàng)。
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