穆罕默德建立政教合一的地点是在[ ]
A．耶路撒冷
B．麦加
C．麦地那
D．巴格达
答案：C
低温热水地面辐射采暖系统的工作压力，应是下列哪一项
A．≤0.4MPa B．≤0.6MPaC．≤0.8MPa D．≤1.0MPa
---Mr Wang enjoys ______ jokes and often makes us _______.
---So he is. He is also friendly.
A．to tell ,to laugh
B．tells, laugh
C．telling ,laugh
D．telling,laughing
