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这道题咋写啊
某纯碱工业的生产流程如图，判断错误的是A.该流程是索尔维法制碱B.X是NaClC.Y是Na2CO3D.Z是NH4Cl
下图表示反射弧结构。下列有关叙述正确的是（）
如图是染色体及构成染色体的DNA、蛋白质、基因之间的关系示意图，正确的是（ ）
中央民族工作会议精神经验交流会于2016年7月15日在北京召开。会议提出，要进一步完善体制机制，推动各类资源配置向少数民族基层地区倾斜。这主要体现了我国在处理民族关系问题上（ ）A.坚持各民族绝对平等的原则B.坚持民族团结的原则C.坚持各民族共同繁荣的原则D.实行民族区域自治制度
这道题选什么？图中反映的历史事件对当时的德国人意味着（ ）A.欧洲将从此出现和平局面B.德意志民族即将再度统一C.东西德经济差距将迅速缩小D.影响德国分裂的苏联即将解体
怎么做？一条弯曲的公路改为直道，可以缩短路程，其道理用几何知识解释的应是（ ）A.两点之间线段最短 B.两点确定一条直线C.线段可以大小比较 D.线段有两个端点
一条弯曲的公路改为直道，可以缩短路程，其道理用几何知识解释的应是（ ）A.两点之间线段最短 B.两点确定一条直线C.线段可以大小比较 D.线段有两个端点
求解求解求解
这道题怎么做啊？将量角器按如图所示的方式放置在三角形纸板上，使点C在半圆上．点A、B的读数分别为86°、30°，则∠ACB的大小为()
阅读理解The secret of happinessAn old man walked slowly with a cane(手杖)into the restaurant .His old jacket, worn-out shoes and warm personality made him stand out from the usual crowd.A young waitress watched him move toward a table by the window. She ran over to him, and said: “Here, sir……let me help you with that chair.”Without saying a word, he smiled and nodded(点头)a thank you. She pulled the chair away from the table and helped him sit. Then she put his came against the table.“Thank you, miss.”he said, kindly.“You're welcome, sir.”she said.After he had finished his breakfast, the waitress brought him the change(零钱)from his bill. He left it on the table. She helped him up and walked with him to the front door.When she went to clean his table, she found a business card under his plate and note on a napkin(纸巾). Under the napkin was a 100-dollar bill.The note on the napkin read: “Dear miss, I respect you very much and I can see you respect yourself, too. It shows by the way you treat others. (3)You have found the secret of happiness. Your kindness will shine through to all those who meet you.”The man she had waited on was the owner of the restaurant where she worked. This was the first time that she or any of the other workers had ever seen him in person.By Steve Brunkhorst（1）The old man left﹩100 under the napkin because he____________A.had a habit of giving tips to waitressesB.thought the meal was deliciousC.wanted to thank the waitress for her good attitudeD.learned the secret of happiness from the waitress（2）What do we know about the waitress and the old man?A.The waitress knew who the old man was from the note.B.The waitress knew the old man before she served him.C.The old man wanted to have the waitress as his secretary.D.It was the first time that the waitress had ever seen her boss.
阅读下列材料，回答（9分） 材料一 这种悲惨的境况，在商业史上是无与伦比的。棉织工人的白骨使印度平原都白成一片了。——英国驻印度一殖民总督材料二 我深信，地球上任何时候的任何一个文明政府，也没有比1765——1784年的东印度政府更为腐败、更为凶恶的了。——英国议员威廉•福拉登请回答：（1）材料一中印度“悲惨的境况”是由某国的殖民统治和掠夺引起的，18世纪时该国号称什么？这种殖民统治是从哪一公司建立开始的？（2分）（2）这些殖民掠夺最终导致了怎样的后果？印度人民又是怎样对待的？（2分）
除去下列各物质中混有的少量杂质，所用试剂不正确的是什么？
“圆梦”实践活动小组正在自制测量仪器，下列是他们制成的未标注刻度的半成品，请你任选一项，借助必要的器材为其粗略标注刻度。A.用小瓶、细管和煤油制成的液体温度计（要求:量程0一100℃，分度值2℃）。B.用弹簧或橡皮筋制作的简易测力计（要求:量程5N，分度值0.5N）。C.用纸条制作的卷尺（要求:量程2m，分度值1cm）。（l）你的选项是______（A或B或C）；（2）你标注刻度的过程是:_____________________________。
请问句型怎么转换？（1）They moved to China a year ago．（同义句）They have ____________ China for a year.（2）The plane will arrive at the airport in 15 minutes. （对划线部分进行提问）____________will the plane arrive at the airport?（3）The film ended 5 minutes ago.（改为同义句）The film has ____________ for 5 minutes.（4）He's never afraid of darkness.（改为反意疑问句）He's never afraid of darkness ,____________ ？（5）Kate has been in the USA for two years.（同义句转换）,Kate has been in the USA ______ two years ______ .
怎么判定两个等腰三角形全等？？？A.顶角对应相等 B.底边对应相等C.两腰对应相等 D.一腰和底边对应相等
大家帮我看看都是什么描写方法？①他的头很小却很漂亮，乌木色的浓密卷发从头上一直披到肩上，与卷曲的胡须连成一片。 ______②不时发出几声：“可是……可是……”然而总是被别人的大笑声所淹没。______③他爬了六层楼的楼梯累得呼呼直喘。一进来就歪在一把沙发上，并开始用眼光从大家的脸上寻找谈话的气氛和观察每人的精神状态。 ______④左拉中等身材，微微发胖，有一副朴实但很固执的面庞。……黑色的眼睛虽然近视，但透着十分尖锐的探求的目光。 ______
根据上下文或首字母提示完成对话，每空一词A: 【1】【2】main school holidays【3】【4】in the UK?B: There are【5】. 【6】the【7】holiday, the【8】holiday and the【9】holiday.A: How long is the s【10】holiday?B: About six weeks.
大家帮我判断对错，如果两个圆的周长相等，那么这两个圆的面积也相等．______．
我国国土总面积是960万平方千米．如图是我国地形分布情况统计图，请根据统计图回答问题．
