皮皮学，免费搜题
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搜题
【单选题】
光纤导光部分是( )A.
层
B.
包层
C.
纤芯
D.
缓冲层
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】It's nice ______ you ______me with my maths.
A.
for, to help
B.
for, helping
C.
of, to help
D.
of, helping
【单选题】It's nice _______ Andy _______ me with my English study. [ ]
A.
at; to help
B.
of; to help
C.
with; help
D.
of; help
【单选题】-- Will you please help me with my English? --( ).
A.
Excuse me, I'm afraid not
B.
It's very nice of you
C.
I'm sorry to hear that
D.
Certainly, I'll be glad to
【单选题】—It's nice ______ you ______ me with my maths. —It's my pleasure. [ ]
A.
for, to help
B.
for, helping
C.
of, to help
D.
of, helping
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