题目

单词拼写(单句首字母填空)。 (1) The best time to visit New York is in O. (2) The twelfth month of a year is D. (3) Tree Planting Day comes on the t of March. (4) Great changes have taken place in my home town in the t century. (5) Whenever she makes decisions, her family always comes f. 答案:【1】October 【1】December 【1】twelfth 【1】twentieth 【1】first 用惰性电极电解下列溶液一段时间后,再加入一定量的另一种物质(方括号内),溶液能与原来溶液完全一样的是 [  ] A. CuCl2[CuSO4] B. NaOH[NaOH] C. NaCl[HCl] D. CuSO4[Cu(OH)2]
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