I'm Yangyang. I like table tennis. I don't like skipping. I have a bike, and I like riding my bike. My father likes swimming. He likes tea and coffee. My mother likes skipping. And she likes her brown cat .
澶渊之盟是哪两者之间的盟约（ ）
实验室用Na2CO3固体配制250mL 1.00mol/L的Na2CO3溶液，填空并请回答下列问题：
科学课后，小明归纳了恶性肿瘤的几个观点，以下观点中有错误的是（ ）
下列河流最终注入印度洋的是（ ）
