— We are going to have a party next Saturday, and I'd like you to come.

— __________! I have a meeting to attend that day. Thank you all the same.

根据短文内容，选择最佳答案。
B
    Hello! My name is Kate. This is my bag. It's a nice bag, right? It is from my mother.
    What's in my bag? A ruler is in it. And the ruler is white. It's not mine. It's Lily's. Lily is my sister. She likes white but I don't. Two pencils are in it, too. One is red and the other is blue. They are mine. Look, a nice watch is in it. The watch is white and blue. It's mine and it's from my father. A notebook is in my bag, too. The notebook is yellow and blue. Is this notebook mine? No, it's Anna's. Anna is my cousin. She likes yellow and blue very much.

0.3＋0.3＋0.3＋0.3用乘法算式表示是：（  ）

用N_A表示阿伏加德罗常数的值．下列说法正确的是（   ）

某校开展了宪法知识普及宣传活动。在活动中发现多数同学对宪法知识懵懵懂懂，知之甚少，宪法观念十分淡薄。如果你也存在类似情况，你今后打算（    ）

①认真学习宪法知识，深入领会宪法知识   ②把宪法作为主要学习任务   ③自觉参与宪法知识的普及教育活动   ④把宪法作为唯一的行为准则