户赋
参考答案：
是在封邑之地按户征收的赋税，属人头税性质。封邑内民户除缴纳田租外，还纳户赋，每户每年200钱，作为封君列侯的“私奉养”。
用am, is, are填空。
1. Excuse me! ______ this your eraser?
2. What ______ those? ______ they birds?
3. This ______ his ruler. Where ______ my ruler?
4. I ______ in Class Three. ______ you in Class Three,too?
5. ______ these her English books?
6. Those ______ their apples. Where ______ his apples?
7. She ______ eleven. How old ______ that boy?
8. He ______ my friend. ______ your friend a boy or a girl?
9. ______ those maps? No,they ______ not. They ______ pictures.
10. These ______ your bananas. Here you ______.
世界博览会，是一项由主办国政府组织或政府委托有关部门举办的有较大影响和悠久历史的国际性博览活动。参展者向世界各国展示当代的文化、科技和产业上正面影响各种生活范畴的成果。它已经历了百余年的历史，逐渐成为荟萃科学技术与产业技术的展览会，成为产业人才培育和一般市民启蒙教育不可多得的场所。但它最初是( )。
A．以纺织工业品展示为主B．以生活日用品展示为主C．以美术品和传统工艺品的展示为主D．以建筑成果展示为主
