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【单选题】
表示波的波动能量传播速度的波动参数是（）。A.
波数
B.
周期
C.
相速度
D.
群速度
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反馈参考答案：
举一反三
【单选题】Part A Directions: Read the following three texts. Answer the questions on each text by choosing A, B, C or D. Mark your answers on ANSWER SHEET 1. One day in my class, Maria shared her feelings about...
A.
in the same financial trouble
B.
in the same finacial condition
C.
of the same family background
D.
of the same feeling over the issue
【单选题】She offered us her burnt cakes and smiled ______.
A.
suspiciously
B.
apologetically
C.
leisurely
D.
practically
【简答题】只有愿意发挥想象，你才能读得进这本书。_______ if you are willing to use your imagination will you b1. 只有愿意发挥想象，你才能读得进这本书。 _______ if you are willing to use your imagination will you be able to become ________ in this bo...
【简答题】背诵并默写《致橡树》全文。 2谈谈作者在诗作中表达了怎样的中心思想?
【单选题】She offered us her burnt cakes and smiled _______.
A.
apologetically
B.
practically
C.
hopelessly
D.
generally
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