题目

    Are you sometimes a little tired and sleepy in the early afternoon? Many people feel this way after lunch. They may think that eating lunch is the cause of the sleepiness. Or, in summer, they may think it is the heat. However, the real reason lies inside their bodies. At that time – about eight hours after you wake up – your body temperature goes down. This is what makes you slow down and feel sleepy. Scientists have tested sleep habits in experiments where there was no night or day. The people in these experiments almost always followed a similar sleeping pattern. They slept for on①威尼斯是一个奇特的城市，这里不是“开门见山”，而是“开门见...||||①威尼斯是一个奇特的城市，这里不是“开门见山”，而是“开门见水”。②听说，原先这里像太湖水乡，也有说类乎苏州城，其实，威尼斯是威尼斯，她有独特的瑰丽的形象。③这里没有汽车，大小船挤在大运河里，穿梭般的来往不绝。④我们登上汽船（等于城市公共汽车），________两岸风光，十四五世纪的哥特式建筑，文艺复兴时代的宫殿和贵族院落，鳞次栉比。⑤泛舟在大运河上，就像在参观欧洲建筑艺术博览会。⑥汽船穿过一座座桥梁，其中有一座全由大理石建成的“李亚度桥”，特别引人注目，这是1592年建成的独孔拱桥，雕刻________，造型优美，桥上两侧开设商店，别具一格。⑦汽船向前驶去，河道逐渐开阔，现代化的摩托艇、汽艇和古老的“公朵拉”并行。⑧“公朵拉”是一种小汽船，翘着头尾，由船夫摇橹，供游客________两岸风光。⑧据说历史上盛时有一万多艘，现在只保留四百艘了。 1．本段中心句是________________________ 2．依次摘出表明作者游踪的句子________________________ 3．语言品味。选择词语，并说明理由。（提示：着重抓住两个词与众不同的字进行比较） 我们登上汽船，________两岸风光。（A．观看　　B．观赏）理由： 雕刻________，造型优美。（A．精细　　B．精美） 理由________________________ 供游客________两岸风光。（A．游览　　B．饱览） 理由________________________