问题描述：
1.The second-hand car Jack bought was almost new; ________ it was in good condition.
A.however B.besides C.although D.while
2.The results of his experiment affords a sound ________ for statement.
A.reason B.cause C.basis D.effect
说明原因
A.however B.besides C.although D.while
2.The results of his experiment affords a sound ________ for statement.
A.reason B.cause C.basis D.effect
说明原因
问题解答：
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