鹦鹉螺在分类地位上属于软体动物门（）。
A、腹足纲
B、头足纲
C、瓣鳃纲
D、多板纲
参考答案：B
用所给词的适当形式填空。
1. I don't know how _______ ( do ) it.
2. Zhang Yong is one of the famous ________ (swim) in China.
3. It's hard to give up _ ______ (smoke) , but you have to.
4. I have ______ (be) to the Great Wall twice.
5. Shanghai is ______ (locate) in the east of China.
邓 * * 理论是马克思主义与中国实际相结合的第二次飞跃。()
