—I’m sorry for being late, Miss Green. —___________.
A.That's right
B.You are welcome
C.It doesn't matter
D.You should be sorry
答案:C
考查日常英语。用来回答别人道歉的句子有It doesn't matter;Never mind; That’s OK; It’s nothing; That’s all right.
—I’m sorry for being late, Miss Green. —___________.
A.That's right
B.You are welcome
C.It doesn't matter
D.You should be sorry
答案:C
考查日常英语。用来回答别人道歉的句子有It doesn't matter;Never mind; That’s OK; It’s nothing; That’s all right.
(10分)现有A、B、C、D、E五种强电解质,它们在水中可电离产生下列离子(各离子不重复):
阳离子 | H+、Na+、Al3+、Ag+、Ba2+ |
阴离子 | OH-、Cl-、CO32-、NO3-、SO42- |
(1)用PH试纸测出A、B溶液呈碱性,C、D、E溶液呈酸性
(2)A溶液与E溶液反应既有气体产生又有沉淀产生;A溶液与C溶液反应只有气体产生
(3)D溶液与另外四种溶液反应都能产生沉淀;C溶液只能与D溶液反应产生沉淀则各物质分别是(写化学式):A 、B 、C 、
D 、E 。