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【单选题】
听力原文：M: Janetis quite enthusiastic about camping, isn't she? W: Yes. She often goes for weeks at a time. What does the woman say about Janet?A.
She hasn't gone camping for several weeks.
B.
She likes to take long camping trips.
C.
She prefers to go camping on weekends.
D.
She takes a long time to go.
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【单选题】Great writers are those who not only have great thoughts but also express these thoughts in words which appeal ______ to our minds and emotions.
A.
forcefully
B.
greatly
C.
strongly
D.
powerfully
【单选题】The most outstanding local colorist writers of 19th century America is ______, whose The Adventures of Huckleberry Finn has been exerting great influence on later generations.
A.
Mark Twain
B.
Henry James
C.
Washington Irving
D.
James Fennimore Cooper
【简答题】TCP/IP模型由低到高四个层次分别为网络接口层 _____ 、_____ 和应用层。
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【单选题】In expressing their thoughts, great writers are able ______.
A.
to confound the readers
B.
to move men to tears
C.
to move our actions
D.
to puzzle our feelings
【单选题】设X1，X2，…，Xn是来自总体X的样本，Ai为i阶原点矩，Mj为j阶中心矩，下列关于样本矩的关系式中哪一个是错误的？
A.
A1=X ̅
B.
M2=A2-A1^2
C.
(n-1)S^2=nM2
D.
S^2=A2-A1^2
【单选题】The United States is proud of ________ great writers, especially ________ in the 20th century such as Mark Twain and Ernest Hemingway.
A.
its ... those
B.
the ... which
C.
her ... what
D.
his ... that 窗体顶端
【单选题】China has produced many great writers over the last ten years, ____ Mo yan.
A.
among them was
B.
among whom was
C.
in which was
D.
among whom were
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