题干
阅读短文， 判断句子对错。
I am 8 years old. I have 2 pencils. I have 4 rulers. I have a friend. Amy is 9 years old. She has 9 pencils and a ruler.
I'm eight years old.____
I have 2 friends.____
I have five rulers.____
Amy has nine pencils.____
Amy is nine. ____
答案(点此获取答案解析）
对,错,错,对,对
滤 ②加过量NaOH溶液 ③加适量盐酸 ④加过量Na2CO3溶液 ⑤加过