1、2008年1月12日我国科考队员成功登上了南极“冰盖之巅”。此时在他们生理上出现的适应性变化是： ( )
①体温下降 ②机体耗氧量降低 ③皮肤血管收缩
④体温调节中枢兴奋性增强 ⑤甲状腺激素分泌量增加
A.①③④ B.①④⑤ C.②③⑤ D.③④⑤
22．(4分)________________________________________________________________
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____________________________________________________________________23．(6分)________________________________________________________________
21．(4分)________________________________________________________________
20．(3分)________________________________________________________________
19．(8分)
(1)_________________________、___________________________
(2)_________________________、___________________________
(3)_________________________、___________________________
(4)_________________________、___________________________
17．(10分)
(1)____________________________________________________________________
_____________________________________________________________________(2)____________________________________________________________________
(3)____________________________________________________________________
____________________________________________________________________18．(7分)
(2)____________________________________________________________________
19、古诗文默写。(8分)
(1)__________________，__________________，后之视今，亦犹今之视昔。(《兰亭集序》)
(2)我闻琵琶已叹息，又闻此语重唧唧。__________________，__________________。(《琵琶行》) (3)莫道不销魂，__________________，__________________。(《醉花阴》)
(4)__________________，__________________；雁阵惊寒，声断衡阳之浦。(《 滕王阁序》)