①2KOH+CO2═K2CO3+H2O ②Ca（OH）2+CO2═CaCO3↓+H2O
19世纪六七十年代中国民族资本主义工业产生。此时，作为一位投资者，你的选择主要是受到（ ）
Today is Sunday. There's no school. It is sunny. Charlie and his father are going to the park. Look. Charlie is riding his bike. He is very happy. His father is sitting under a big tree. He is reading a newspaper. In the afternoon, the weather is bad. It is cloudy. Now it is raining. Charlie and his father have no umbrella. They are running home. But they forget their bike.
“聪明秀出谓之英，胆力过人谓之雄。”
英雄可能是书生意气的少年，也可能是阅尽沧桑的老者；英雄可能是学问天下的儒士，也可能是侠骨柔肠的豪杰；英雄可能是道义铁肩担的实践者，也可能是华章妙笔著的理论家；英雄可能是弄潮时代的伟人，也可能是躬耕生活的“微尘”……
你觉得我们生活的这个时代什么样的人可以称为英雄？你有着怎样的英雄观？
要求：选好角度，确定立意，明确文体，自拟标题；不要脱离材料内容及含意的范围作文；不要套作，不得抄袭。
阅读下面语段，完成后面练习题
“不违农时，谷不可胜食也；数罟不入洿池，鱼鳖不可胜食也；斧斤以时入山林，材木不可胜用也。谷与鱼鳖不可胜食，材木不可胜用，是使民养生丧死无憾也。养生丧死无憾，王道之始也。
“五亩之宅，树之以桑，五十者可以衣帛矣。鸡豚狗彘之畜，无失其时，七十者可以食肉矣。百亩之田，勿夺其时，数口之家，可以无饥矣；谨庠序之教，申之以孝悌之义，颁白者不负戴于道路矣。七十者衣帛食肉，黎民不饥不寒，然而不王者，未之有也。
“狗彘食人食而不知检，涂有饿莩而不知发，人死，则曰：‘非我也，岁也。’是何异于刺人而杀之，曰‘非我也，兵也’?王无罪岁，斯天下之民至焉。”
Today is Sunday. There's no school. It is sunny. Charlie and his father are going to the park. Look. Charlie is riding his bike. He is very happy. His father is sitting under a big tree. He is reading a newspaper. In the afternoon, the weather is bad. It is cloudy. Now it is raining. Charlie and his father have no umbrella. They are running home. But they forget their bike.