27. -------The farmers lived near the high way.
------- _________very noisy.
A. That might be B. They must be C. It must have been D. There must be
26. _______ to go out alone, the retired minister had to go for a walk with several policemen following him.
A. Warned not B. Not warning C. Warning not D. Not warned
25. _______ I really don’t like art, I find his work impressive.
A. As B. Since C. If D. While
24. Whom ______ Tom saw it in the park last week?
A. it was that B. it was whom C. was it that D. was it whom
23. A great many books _______every year, and large quantities of them ______ well.
A. have published; sells B. have been published; sell
C. have been published; sells D. has been published; sell
22. ----I saw Jane and her boyfriend in the park at eight yesterday evening.
----Impossible. She ______ TV with me in my home then.
A. watched B. had watched C. would watch. D. was watching
第一节 单项填空(共15小题;每小题1分,满分15分)
21. While Kate was studying biology in France, she developed taste for fine wines.
A. the; a B. 不填;不填 C. 不填;a D. the; the
35.(7分)材料1:1642年,比利时科学家海尔蒙特进行了一项著名的柳树实验。他在一个花盆里栽种了一棵2.3 kg的柳树。栽种前,花盆里的泥土经过高温烘烤干燥后称重为90.8 kg。以后的5年中,海尔蒙特除了只给柳树浇水外,没有在花盆里添加任何物质,每年秋天柳树的落叶也没有称重和计算:5年后,他将柳树和泥土分开称重,发现柳树的重量变成了76.7 kg,泥土烘干后的重量为90.7 kg,比原来只减少0.1 kg。于是他得出结论:柳树获得的74.4kg物质只是来源于水:
材料2:科学家将一盆绿色植物放在不同波长的光下照射,然后测量该植物对不同光质的吸光率,结果列于下表:
(1)根据你所掌握的生物学知识,判断海尔蒙特的结论 (是/否)确切?因为:
(2)花盆内的泥土减少了0.1 kg,其原因是 。
(3)请用上表数据在指定方格纸内绘出植物叶片光吸收变化曲线,并 分析得出结论。 。
(4)C02浓度对植物光合作用强度影响的规律如右图。当外界C02浓度处于A时,植物叶片光合作用所固定的C02量与 相等;为提高封闭大棚内作物产量,棚内人工释放C02应控制在 (填图中字母)浓度为宜。
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