皮皮学，免费搜题
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搜题
【单选题】
葡萄霜霉病发病初期多在叶片正反面形成( )的霉状物A.
白色
B.
黑色
C.
黄色
D.
褐色
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】He was confronted with many difficulties, which, with the help of his friends, he successfully overcame.
A.
was opposed by
B.
was faced with
C.
was happy with
D.
was caused by
【单选题】To write his paper, he tried hard to collect _______ information as he could.
A.
many of
B.
a great many
C.
the number of
D.
a large amount of
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