问题
选择题
--- What is our head teacher like, do you know?
--Oh, he is very kind, ________ he looks very serious.
A．because
B．though
C．if
D．when
答案
答案：B
题目分析：句意：尽管他看起来很严肃，但他很善良。A因为B尽管，虽然C如果D当。故选B。
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