问题
选择题
—It's going to rain. Let me fetch an umbrella for you.
—Thank you! You are so ________. [ ]
A. lucky
B. kind
C. relaxed
D. interesting
答案
答案：B
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—It's going to rain. Let me fetch an umbrella for you.
—Thank you! You are so ________. [ ]
A. lucky
B. kind
C. relaxed
D. interesting
答案：B
sinl00πt（V），则下列说法中正确的是（ ）
V