题目

阅读理解，判断正误，正确的打“√”，错误的打“×”。 Mike: What’s this, Jack?Jack: It’s my playhouse（玩具屋）. Come in, Mike.Mike: Are these toys?Jack: Yes, they are all new. Look, I have ten cars.Mike: They are beautiful. How many balls do you have?Jack: Let’s count（数数）.Mike: One, two, three ... six.Jack: Do you like your new toys?Mike: Yes, I do. And I like my old （旧的）toys, too. They are my birthday presents（礼物）.( ) 1. Jack has nine cars. ( ) 2. Jack’s toys are new.( ) 3. Jack has six balls.( ) 4. Jack and Mike like the toys.( ) 5．在AlCl3溶液中逐渐滴加入NaOH溶液至过量，发生如下反应：3NaOH+AlCl3=Al（OH）3↓+3NaCl，Al（OH）3+NaOH=NaAlO2+2H2O，NaAlO2，学名：偏铝酸钠，易溶于水．下列图象中，各个量随NaOH溶液的加入，变化图象增强的是（　　）A．B．C．D．