题目:
Most of the shops nearby _____ until 7 o'clock, so it is easy to buy things. [ ]
A. stay opened
B. are stayed open
C. stay open
D. are staying opened
答案:
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答案:C题目分析:由反应的化学方程式NH2Cl+H2O═X+HCl0,可知反应前后各原子的个数为反应前 反应后N原子 1 0H原子 4 1Cl原子 1 1O原子 1 1根据化学变化前后原子的种类、数目...