Prof. Smith, I should like to say that you gave us an unforgettable entertainment on Friday It was most e njoyable It was very kind of you. This is note of
A.
congratulations
B.
thanks
C.
apology
D.
regret
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参考答案:
举一反三
【单选题】The passage is mainly concerned with ______.
A.
the feasibility of life existing on other planets
B.
the description of Mars's physical environment
C.
the comparison between the physical features of Mars and the Earth