________in the heart of Toronto is the Canadian National Tower , which is often called the CN Tower for short.

A．Locating

B．Located

C．Having been located

D．Having located

寒假期间，衡阳地区的自然现象[ ]

A、夜在变长

B、房屋的影子（正午）在变短　

C、地下水位上升

D、主要盛行东南风