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【单选题】
分析以下C#语句,注意类MyClass没有访问修饰符。若必须为类MyClass添加访问修饰符,并使MyClass的可访问域保持不变,则应选择【 】。 namespace test { class MyClass { int i; } }A.
private
B.
public
C.
protected
D.
internal
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反馈参考答案：
举一反三
【多选题】下列叙述正确的是
A.
共轭效应使红外吸收峰向低波数方向移动
B.
诱导效应使红外吸收峰向高波数方向移动
C.
氢键使红外吸收峰向低波数方向移动
D.
氢键使红外吸收峰向高波数方向移动
E.
共轭效应使红外吸收峰向高波数方向移动
【单选题】–This is the first time I _____ pictures with you . –Now it is time that you ______ a picture for me .
A.
took , took
B.
have taken , took
C.
took , have taken
D.
has taken , take
【单选题】--This is the first time I ____ pictures with my own camera. --It’s time that you ___ a picture of me.
A.
took; took
B.
took; will take
C.
have taken; took
D.
will take; have taken
【单选题】She gives me a big smile __________ she sees me.
A.
a first time
B.
some time
C.
every time
D.
from time to time
【简答题】Please show me _______to send an e-mail, John．It's the first time for me to do it.
【简答题】为了满足学生的需要,学校应当做一些适时的调整。 (to meet one's need)
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