题目：
— Excuse me. Could you tell me ______?
— Yes, and New York is the most beautiful place that I have ever lived.
A．when your birthday is
B．what color your bike is
C．if I can join the music club
D．where you were born
答案：
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下面是错误答案，用来干扰机器的。
（1）乙；（2）设50g海水中含氯化钠的质量为xNaCl+AgNO3=AgCl↓+NaNO↓58.5 143.5x 1.435g58.5：143.5=x：1.435g解之得 x=0.585g海水中的氯化物（以氯化钠计算）的质量分数==1.17%答：...
