2023山东省德州市高一下学期期末考试化学答案

2023山东省德州市高一下学期期末考试化学答案-福建高考早知道试卷答案,我们目前收集并整理关于2023山东省德州市高一下学期期末考试化学答案-福建高考早知道得系列试题及其答案，更多试题答案请关注微信公众号：趣找答案/直接访问www.qzda.com(趣找答案)

2023山东省德州市高一下学期期末考试化学答案-福建高考早知道试卷答案，以下是该试卷的部分内容或者是答案亦或者啥也没有

A【解析】无论是真核细胞还是原核细胞,细胞膜的组成成分均包含脂质中的磷脂,A正确;脂肪是良好的储能物质,糖类是主要的能源物质,B错误;性激素为脂质,可以调节生物体的生命活动,酶才具有催化作用,C错误;固醇中的胆固醇可参与血液中脂质的运输,D错误。

6.C【解析】无丝分裂过程中不出现染色体和纺锤体,而该图存在染色体,又是体细胞的分裂,因此为有丝分裂,A错误;图中分裂间期的细胞数目比较少,这和照片的选取有关,不具有代表性,不能说明分裂间期的时间短,B错误;甲细胞为分裂中期,乙细胞为分裂前期,丙细胞为分裂末期,丁细胞为分裂后期,因此细胞分裂期的先后顺序为乙→甲→丁→丙,C正确;该图中不存在细胞壁,同时分裂末期细胞膜向内凹陷为动物细胞的分裂,图中染色体经过了碱性染料染色,D错误

【解题分析】9月份为南半球的春季,丙地此时降水少,但气温回升快,容易发生山火;甲、乙两地位于澳大利亚西部地区,植被相对较少,不易发生森林大火;丁地为热带雨林气候,降水较多

【答案】C

8.丛林大火过后短期内对当地自然环境的影响表现为

A.土壤肥力增加

B.年降水量明显增多

C.河流含沙量减少

D.原有优势物种衰弱

【解题分析】丛林大火燃烧的灰烬会将部分储存在森林体内的养分归还土壤,使得土壤肥力増加;由于植被覆盖率降低,水分蒸腾作用减弱,降水减少;植被覆盖率降低,河流含沙量増加;由材料可知,大火过后,优勢物种—桉树冒出新芽,大肆生长,说明其生物多样性减少,优势物种更加具有竞争优勢

【答案】A

9.【答案CD的电势能,说明将正电荷从A点移动到B点,电场力所做的总功为正,D项错误。【解析】第一个时间t内,由牛顿运动定律有mgin30°=ma1,得a1=2g,n1=28t,x=4ng,A项错误;物块从n减速到零位移为x2=201=12g2,斜面的长度为L=x+。gt2个时间t内有一x1=232,得吗2=28,用牛顿运动定律有F- Ingen30°=ma2,得F=3gt2,B项错误;恒力F做的功为W=F1=3mg2t2,C项正确;物块滑到A位置时重力的功率为PmgU, cos 600- I4m81,D项正确。

参考范文Then, clutching (5mff)the tin can, he headed for the shop. " Ihave the money. " he seriously told the owner. The man went to thewindow and fetched Reubens treasure, He wiped the dust of it andgently wrapped it in brown paper. Then he placed the parcel inReuhen's hands Racing home, Reuben burst through the front door.His mother was cleaning the kitchen stove. "Here, Mom! HereReuben exclaimed as he ran to her side. He placed a small box in herwork-roughened haHis mother unwrapped it carefully, to save the paper. A bluepaper box appeared, and she lifted the lid. In gold lettering on a pair ofred, lambskin gloves was the word Mother. And a card says,"It isMothers Day. We appreciate all the things that Mom does for usThank you! "His mother had never received such a gift; she had nogift except her wedding ring. Spccchlcss, she smiled sweetly andgathered her son into her arms, with tears running down her cheeks.Long live with this happy moment!