题目

Swimming and English LearningCan you swim? Do you like swimming? Well, how can you learn to swim? I think the best way is to go into the water and learn. I’m afraid you’ll never learn to swim just by reading books about swimming or looking at others swimming. It’s the same with the English study. We must practice, practice and practice.    Listening and speaking are very important for beginners. We can listen to English programs on radio. You may just understand a few words. It doesn’t matter. Just be relaxed, try to catch every word.    Somebody may be a good listener, but he is下列离子方程式正确的是A．碳酸钠溶液与氯化铝溶液反应：2Al3++CO32－=Al2(CO3)3↓B．碳酸氢钙溶液与盐酸反应：Ca(HCO3)2+2H＋=Ca2++2H2O+2CO2↑C．氨水与氢氧化铁溶液反应：Fe3++3OH－=Fe(OH)3↓D．氢氧化钡溶液与盐酸反应：H＋+OH－=H2O