如图是“某地等高线地形图”(单位：米)，读图判断下列说法正确的是    (    )

人体主要由八大系统组成的，其中对生命活动具有调节作用的两大系统分别是____和____．

    Five months ago. I ____(happen) to be upstairs at dusk when the window was open. I didn't go downstairs until the window had to ____(shut). The dark, rainy evening, the wind and the thundering clouds held me ____(entire) in their power.

    It was the first time in one and a half ____(year) since we found shelter here that I'd seen the night face to face. Sadly I am only able to look at nature through dirty curtains ____(hang) before very dusty windows.____is no pleasure looking through them because nature is one thing____really must be experienced. One evening when it was so warm. I stayed ____(wake) on purpose until half past eleven in order to have ____good look at the moon by myself. But as the moon gave far too much light, I ____(not dare) to open the window.