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试题答案

本文从以下几个角度介绍。

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3、[九师联盟]2025届高三押题信息卷(一)1历史试题


Do you love sunflowers This article will walk you through how to plant your sunflower seeds and care for them. Start it with the best temperatures:18～33℃. Part 1 Germinating (使发芽) Sunflower Seeds 1.Choose one kind you like. 2.Put the seeds in a plastic bag. Cover the seeds with wet paper towels. Put them in plastic bags. Once the seeds germinate, plant them. Part 2 ▲ 1.Choose a sunny location. Sunflowers grow best with six to eight hours of sunlight a day. 2.Plant the seeds in holes .Plant seeds 2.5 cm deep and 15 cm apart. Cover the seeds with soil after planting. Part 3 Caring for Sunflower Plants 1.Water plants weekly. Water plants once a week. 2.Fertilize a little or not at all. If you are growing sunflowers for your own enjoyment, there is no need to fertilize. 3.Harvest (收获) the seeds. Sunflowers usually take 80 to 120 days to mature (成熟) and produce new seeds. Tips: Protect the young plants from pests (害虫). Cover the ground with nets. Support plants over 90 cm with sticks.
26. Which temperature is the most suitable to plant sunflowers
A. B. C. D.
27. Which of the following can be put in ▲
A. Planting Sunflower Seeds B. Considering Seeds Quality
C. Watering Sunflower Plants D. Checking the Temperature
28. If you plant your seeds in April, you may harvest in ______.


B: Your hometown
A: Yes. It is Mount Huang.
B: Where is it
A: It is in the south of Anhui. Mount Huang is a good place with beautiful trees and stones.
B: 23 Anything else
A: Some old villages are worth visiting. 24
B: Great! 25


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故选B。
10．D
【详解】A．反应Ⅰ的活化能大于反应Ⅱ，则反应Ⅰ的速率小于反应Ⅱ，A错误；
B．若原料用丙炔，则会有CH3CH=CH-CH=CHCH3、CH2=C(CH3)-C(CH3)=CH2、CH3CH=CH-C(CH3)=CH2共3种分子式为C6H10的有机物生成，B错误；
C．增大Cu的表面积，可加快反应速率，催化剂不能使平衡移动，不能提高C2H2的平衡转化率，C错误；
D．根据图示，C2H3*转化成C4H6(g)过程中，先碳碳双键中有1条键断裂，后又有碳碳双键和碳碳单键的形成，所以有非极性键的断裂和形成，D正确；
答案选D。


(3)
NaCl溶液
7%
(4)②④
19.(5分)(1)E:C0;F:Fe0;G:Fe;(2)C+2C1O高温2C1+Co2↑
(3)Fe+CuS0,=Cu+feS0,或Fe+CuCl=C+feCl2或
Fe+Cu(NO)2=Cu+Fe(NO )2


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