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【单选题】
酸奶制作和引起果酒变酸的微生物分别是（ ）A.
酵母菌和乳酸菌
B.
乳酸菌和酵母菌
C.
乳酸菌和醋酸菌
D.
乳酸菌和乳酸菌
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反馈参考答案：
举一反三
【单选题】When Mark opened the door, he saw a woman standing there. He ______ her before.
A.
never saw
B.
had never seen
C.
never sees
D.
has never seen
【单选题】If he ______ it, he _______ it.
A.
had seen; could have believed
B.
saw; couldn’t believe
C.
saw; couldn’t have believed
D.
has seen; had believed
【简答题】He claimed with pride that he saw the football star Beckham ______ yesterday.
【简答题】He caught me i______ he saw me in the street yesterday.
【单选题】Where did the man see Miss Zhang?
A.
He saw Miss Zhang in the shop.
B.
He saw Miss Zhang on his way back home.
C.
He saw Miss Zhang on his way going hom
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