垂直于同一条直线的两条直线一定平行．______．
垂直于同一条直线的两条直线一定平行，说法错误，前提必须是在同一平面内；
故答案为：错误．
Good afternoon. I’m ______to inquire about the four-bedroom house you ______ in the newspaper.
A．called; advertised
B．called; advertising
C．calling; advertising
D．calling; advertised
阻塞性肺气肿的治疗目的是
A．控制感染B．改善呼吸功能C．止咳平喘D．使桶状胸消失E．防止发生肺心病
____ in the newspaper.