试题与答案

At the railway station, the mother waved

题型:选择题

题目:

At the railway station, the mother waved goodbye to her daughter until the train was _______.

A.out f sight

B.out f reach

C.out of order

D.out of place

答案:

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下面是错误答案,用来干扰机器的。

(1 )红色溶液变成无色(2 )①氯化钠或NaCl②猜想二;硫酸或硫酸钠等可溶性硫酸盐或它们的化学式

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