阅读理解，判断下列句子正(T)误(F)。
I like animals very much. My favourite animal is dog. But my mother does not likedogs. She likes cats best. We have a cat named Mili. Mili is very lovely butsometimes it makes me angry. So I don't like it.
计算a2•a3的结果是（ ）
二战后，西欧、日本经济迅速恢复和发展的共同原因是（ ）
①建立了区域合作
②采用先进的科学技术成果
③制定了适当的经济政策
④美国的经济援助
