1919年五四运动的爆发与下列哪次国际会议有关[ ]
A．华盛顿会议
B．巴黎和会
C．开罗会议
D．德黑兰会议
答案：B
把下列句子改为含有定语从句的主从复合句。
1. I know the boy. He can speak English well.
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2. The season is summer. It comes after spring.
3. The building is my uncle's house. Its wall is white.
4. Will you please lend me the very book? You bought a book last Sunday.
5. The student is our monitor. Our headmaster praised him at the school meeting.
无牙颌模型应有一定的厚度，一般厚为（）。
A.2mm
B.4mm
C.6mm
D.8mm
E.10mm
