【典中点】2017春人教版八年级数学下册 16.1.2 学用《典中点》(无答案)
《典中点》第一单元达标检测卷
《典中点》第一单元,达标检测卷第一单元达标检测卷一、基础训练营(32分)1．下列加点字读音完全正确的一项是()(1分)A．正月(zhēnɡ)掺和(cān)翡翠(fěi)水浒传(hǔ)B．骡马(lǘ)似的(shì)藏戏(zànɡ)吞咽(yàn)C．搅和(huo)汤匙(chí)嘟囔(nɑnɡ)哄堂大笑(hōnɡ)2．读拼音，写词语。
(8分)北京的春节真热闹!腊八这天,家家都会áolàbāzhōu()。
除夕夜家家dēnɡhuǒtōnɡxiāo()，biānpào()声日夜不绝。
yuándàn()这天，男人们午前到qīnqi()家、朋友家bàinián()，而小孩子最喜欢逛庙会，因为庙会上有sàijiàochē()和sàiluòtuo()的。
3．选字组词。
(6分)水()()刑()洁()索搅()陪()凉()牵()元()()售云()()夜4．把下列四字词语补充完整，并选词填空。
(5分)万()()新()()不同万不()()()灯()彩()()分文两()三()(1)春节到了，中华大地上到处____________，显出一派____________的气象。
(2)在外边做事的人，除非____________，必定赶回家来吃团圆饭。
(3)少数民族和汉族的饮食风俗虽然____________，但各族人民热爱祖国、热爱民族大团结的心是相同的。
5．在下列句子中填入恰当的关联词语。
(4分)(1)过新年，小孩子()可以买到各种各样的玩意儿，()可以放鞭炮。
(2)这()粥，()小型的农业展览会。
(3)今日腊八粥的颜色()是深褐色，()枣子同赤豆搁多了。
(4)春节()很快乐，()一眨眼工夫就过去了。
6．按要求完成句子练习。
(8分)(1)世界上还有几个剧种是戴着面具演出的呢(改为陈述句)______________________________________________________(2)身无分文的唐东杰布就这样在雅鲁藏布江上留下了58座铁索桥。
《典中点》期中测试卷
期中达标检测卷时间：90分钟 满分：100分一、基础训练营(44分)1．下面每组里有一个错误音节，请用“——”画出，并在后面的括号里改正。
(4分)(1)梧．桐(wú) 下咽．(yàn)挑．促织(tiāo)( ) (2)凌．空(lín) 召．开(zhào)停歇．(xiē)( ) (3)融．化(róng) 孵．蛋(fú)手臂．(bì)( ) (4)中弹．(tán) 准．备(zhǔn)缤．纷(bīn)( )2．读拼音，写词语。
(8分)。
jì suàn gào su tiān gāo yún dàng ē q ǔ guī zé ch éng hu áng j ú l ǜ3．把下列词语补充完整，并任选一个造句。
(10分)手( )脚( ) 大吃( )( ) ( )心( )胆( )嘴( )舌 ( )( )缤纷 ( )高( )爽( )面( )方 ( )发( )中________________________________________________________4．选择题。
(12分)(1)选出下列词语搭配不正确的一项( )A．鲜艳的服装婉转地歌唱B．明朗的天空高高地飘扬C．纪律严明要求严格D．发现产品发明问题(2)下面哪组是意思相反的词？()A．安静平静B．寒冷炎热C．答应同意D．准备打算(3)下面哪个句子与“银杏树的叶子像一把把小扇子”这句话写法相似？()A．松柏穿上厚厚的、油亮亮的衣裳。
B．海浪激起的泡沫像一堆堆白雪。
C．秋的声音，在每一片叶子里，在每一朵小花上，在每一滴汗水里……D．今天太热了，我感觉自己要融化了。
(4)与“萧萧梧叶送寒声，江上秋风动客情”表达的感情不相同的诗句是()A. 悠悠天宇旷，切切故乡情。
B．独在异乡为异客，每逢佳节倍思亲。
2020春人教版八年级数学下册 第16章 全章典中点习题(付,213) 典中点习题
14．当 x 取什么实数时，式子 3x－1＋2 的取值最小？并求出这 个最小值．
解： 3x－1≥0 且由二次根式有意义的条件得 3x－1≥0，即 x≥13， 所以当 x＝13时，式子 3x－1＋2 的取值最小，最小值为 2.
【点拨】根据|m－2|＋ n－4＝0 得 m＝2，n＝4，再根据三角形 三边关系定理得：三角形三边长分别为 4，4，2，故选 B.
12．【2019·黄石】若式子 xx－－21在实数范围内有意义，则 x 的取 值范围是( A ) A．x≥1 且 x≠2 B．x≤1 C．x>1 且 x≠2 D．x<1
【点拨】本题易错在漏掉分母不为 0 这个条件，由题意知 x－1≥0 且 x－2≠0，解得 x≥1 且 x≠2.
13．已知 x＋1＋ x＋y－2＝0，求 x，y 的值． 【方法总结】a2，|a|， a都为非负数，即 a2≥0，|a|≥0， a ≥0(a≥0)．可利用“若几个非负数之和为零，则这几个非负数同 时为零”解决问题．
4
3．化简|a－3|＋( 1－a)2 的结果为( D ) A．－2 B．2 C．2a－4 D．4－2a
4．【2019·常州】下列各数中与 2＋ 3的积是有理数的是( D ) A．2＋ 3 B．2 C． 3 D．2－ 3
A. －x－2
B. x
C. x2＋2
D. x2－2
2．下列式子不一定是二次根式的是( A )
A. a
B. b2＋1
C. 0
D. （a＋b）2
【点拨】根据二次根式的定义进行识 别. a中 a＜0 时不是二次根式．
2020春人教版八年级数学下册 第16章 阶段核心方法专训 比较含二次根式的式子的大小的八种方法 典中点习题
第十六章 二次根式
阶段核心方法专训 比较含二次根式的式子的大小的八种
方法
提示：点击 进入习题
1 见习题 2 见习题
3 见习题 4 见习题 5 见习题
6 见习题 7 见习题 8 见习题
答案显示
1．比较 6＋ 11与 14＋ 3的大小．
解：因为( 6＋ 11)2＝17＋2 66，( 14＋ 3)2＝17＋2 42， 17＋2 66＞17＋2 42，所以( 6＋ 11)2>( 14＋ 3)2. 又因为 6＋ 11>0， 14＋ 3>0，所以 6＋ 11＞ 14＋ 3.
6．已知 x＝ n＋3－ n＋1，y＝ n＋2－ n，试比较 x，y 的大
小．
解：1x＝
1 n＋3－
n＋1＝
n＋3＋ 2
n＋1＞0，
1y＝
1 n＋2－
＝ n
n＋2＋ 2
n＞0，
∵ n＋3＋ n＋1＞ n＋2＋ n＞0，∴1x＞1y＞0，∴x＜y.
7．用“<”连接 x，1x，x2， x(0<x<1)． 解：取特殊值 x＝14，则1x＝4，x2＝116， x＝12， ∴x2＜x＜ x＜1x.
8．比较 5－a与3 a－6的大小．
解：∵5－a≥0，∴a≤5. ∴a－6＜0. ∴3 a－6＜0. 又∵ 5－a≥0，∴ 5－a＞3 a－6.
＝ 2
3＋
2，
2＋ 3＞ 3＋ 2，
∴2－1
＞ 3
1 3－
2.
5．比较 193－1与23的大小． 【点拨】利用作差法比较两个式子的大小的方法，即 a－b>0， 则 a>b；a－b<0，则 a<b；a－b＝0，则 a＝b.
典中点八年级下第一单元测试卷测试卷
Unit 1标准检测卷(满分：120分时间：100分钟)听力部分(20分)一、听句子，选出句子中所包含的信息(每小题1分，共5分) 1．A. park B．beach C．museum2．A.hen B．hens C．pigs3．A. go shopping B．go swimming C．go camping 4．A.I bought nothing for my father.B．My father bought nothing for me.C．My father bought something for me.5．A. We rode to school yesterday.B．We went to school on foot yesterday.C．We drove to school yesterday.二、听对话及问题，选择恰当的图片(每小题1分，共5分)6. A B. C7.A. B. C.8.A. B. C.9.A. B. C.10. A . B. C.三、听长对话和问题，选择恰当的图片(每小题1分，共5分) 听第一段材料，回答第11～13题。
11．A. Suzhou. B．Fuzhou. C．Hangzhou.12．A. Her sister. B．Her parents. C．Her cousin.13．A. A shirt. B．A sweater. C. A skirt.听第二段材料，回答第14～15题。
14. A．By bus. B．By train. C．By car.15. A．Enjoyable but tiring.B．Boring and tiring.C．Comfortable but boring.四、听短文，选择正确的答案(每小题1分，共5分) 16．Tony and his family took a long holiday during the________.A．winter vacation B．summer vacationC．Christmas vacation17．Tony's brother works________．A．in a school B．on a farmC．in a hospital18．Tony's sister________．A．went to work B．went to ParisC．stayed at home19．________ went hiking in the mountains.A．Tony's parents B．Tony's classmatesC．Tony's brother20．Tony went to________ in July with other students in his school.A．France B．Scotland C．India笔试部分(100分)五、单项选择(每小题1分，共15分)21．—There are dark clouds，and the wind is blowing(吹) strongly.—It________ that a typhoon is coming.A．feels B．soundsC．seems D．looks22．You'd better not read today's newspaper because there is________ in it.A．nothing special B．anything newC．everything important D．something interesting 23．—Judy and I will go to the beach tomorrow.—It's so nice. Enjoy________．A．yourselves B．yourselfC．herself24．Jim sits behind me, so I sit________him.A．at the top of B．at the end ofC．in the middle of D．in front of25．(N)I felt like ________ in the sky like a bird.A．fly B．flew C．am flying D．flying26．We still have________ to make this birthday cake look________．A．time enough; enough goodB．enough time; enough goodC．enough time; good enoughD．enough time; enough well27．—I'm ________，Mom. Can I have something to eat?—OK. Here's some bread.A．full B．heavy C．hungry D．thirsty28．My sister dislikes________ books but she likes________ the piano.A. reading; playing B．read; to playC．read; playing D．reading; play29．—Can you speak Chinese, Steve?—Yes, only________. I came to China only a month ago.A．few B．a few C．little D．a little30．—Listen! Someone is playing the piano.—Wow！________beautiful music! I like it very much.A．What B．How a C．What a D．How31.—________ you________ to Nanhu Park a week ago?—Yes. We had a good time there.A．Do; goB．Did; goC．Did; went32．—Did you watch TV last night?—________. I watched a soccer game on it.A．Of course B．SorryC．I'm afraid not D．Good luck33．—________ the heavy rain，we didn't go camping yesterday.—What a pity!A．Because that B．Because ofC．Instead of D．As for34．—How was your day off?—Pretty good! I ________the Science Museum with my classmates.A．visited B．visitC．will visit D．was visiting35．Please try to ________ home on time. Don't keep us ________.A．get to；to wait B．arrive in；waitingC．get; waiting D．reach; to wait六、完形填空(每小题1分，共15分)(词数：约180; 建议用时：6分钟)Long long ago, there was a beautiful little girl. She was________(36)because she had no family and no home. She only had her clothes ________(37) some bread. But she was very ________(38)．A man asked her ________(39) she had something to eat. She gave him her________(40)．A child cried and told her that his________(41)was very cold. So she gave him her hat.Then, she met a child________(42)no coat. She gave him her coat.One day, in the cold________(43)forest, she met another child who________(44)her dress. The little girl thought that it was dark and________(45)could see her, so she gave her dress away. At last, she had almost nothing: no family, nowhere to live，________(46)to eat and little to wear.________(47), stars fell from the sky. These stars became beautiful pieces of money. With the money, she________(48)a new dress and a coat.The little girl was rich for the________(49)of her life and she still________(50)the people in need with her money.36．A. alone B．happy C．poor37．A. or B．but C．and38. A．kind B．bored C．sad39．A. where B．if C．when40．A. clothes B．home C．bread41．A. neck B．back C．head42. A．without B．with C. on43．A. noisy B．dark C．bright44．A. asked for B．took off C．gave away45．A. someone B．nobody C．anybody46. A．something B．everything C．nothing47．A. Suddenly B．Certainly C．Recently48．A. chose B．borrowed C．bought49．A. end B．beginning C．rest50. A．helped B．helps C．help七、阅读理解(每小题2分，共30分)A (词数：约120；建议用时：4分钟)51.You do not have to pay money on Tuesday if you go to________．A．Spring RestaurantB．Science MuseumC．Sunshine Shopping CenterD．Huatai Hotel52．What can't you do at 3 o'clock on Saturday afternoon?A．Go to Spring Restaurant.B．Have coffee in Huatai Hotel.C．Visit Science Museum.D．Shop in Sunshine Shopping Center.53．If you want to drink coffee early on weekdays, you can go to________．A．Peace Road B．East RoadC．West Road D．Green Road54．Which place is still open after 10：00 pm on Thursday?A．Spring Restaurant.B．Science Museum.C．Sunshine Shopping Center.D．Huatai Hotel.55．The text is probably taken from________．A．a novel B．a guidebookC．a dictionary D．a science reportB(词数：约160；建议用时：7分钟)Mr and Mrs White had two sons and three daughters. One Sunday, Mrs White said to her husband, “The children don't have any lessons today, and you're free too. There's a new funfair(游乐场)in the park. Let's all go there to play.”Her husband said, “I want to finish some work today.” “Oh, forget it. Go there and make our children happy. That's the most important work，” Mrs White said.So Mr and Mrs White took their children to the funfair. Mr White was fortyfive years old, but he enjoyed the funfair more than his children. He hurried from one thing to another, and ate lots of sweets. One of the children said to her mother, “Dad is just like a small child, isn't he, Mom？” Mrs White didn't want to follow her husband around any more at that time and answered, “He is even worse than a small child, Mary, because he might spend more money than a small child.”56．There were ________ children in the family.A．five B．three C．four57．One Sunday, Mr and Mrs White went to ________ with their children.A．school B．work C．a funfair58．Mr White liked the place so much that he ________.A．bought lots of drinkB．followed his wife all the timeC．hurried from one thing to another59．From the story we know Mrs White ________ when Mary asked her the question.A．was still excited to playB．ate a lot of sweetsC．was a little angry with Mr White60．Of all the family members, ________ enjoyed playing there most that Sunday.A．Mr White B．Mrs White C．MaryC (词数：约190；建议用时：8分钟)One day，the father of a very rich family took his son on a trip to the countryside. He wanted to show his son how poor people lived. They spent a few days and nights on the farm. After they came back from their trip，the father asked his son，“How do you like our trip？”“It is great，Dad.”“Do you see how poor people live？” the father asked.“Oh，yeah，” said the son.“So，tell me，what do you learn from the trip？” asked the father.“I se e that we have one dog and they have four. We have a pool that reaches to the middle of our garden，and they have a river that has no end. We have beautiful lights in our garden，and they have the stars at night. We have a small piece of land to live on，and they have large fields. We have servants(仆人) to serve us，but they serve others. We have fences(栅栏) to protect us，and they have friends to protect them.”The boy's father was speechless.“Thanks，Dad，for showing me how poor we are，” said the son.61．Why did the father take his son to the countryside?A．He wanted him to enjoy the beauty of the countryside.B．He hoped that his son could help those poor people.C．He wanted to show his son how poor people lived in the countryside.D．He hoped that his son could get a new idea of the countryside.62．After the trip，the son thought ________.A．what a poor life he hadB．how great his father wasC．he should take good care of his rich lifeD．he should thank his father for giving him the happy life63．From the passage，we know the people in the countryside ________.A．often went on a trip in the cityB．had more beautiful lights in their gardensC．had smaller land to live on than the people in the cityD．must be happy because they had friends to protect them64．How did the father feel after he heard his son's answer?A．Happy.B．Surprised.C．Excited.D．Angry.65．What does the story tell us?A．The rich and the poor are the same.B．The rich and the poor should help each other.C．The real rich people are those who are rich at heart.D．The people in the countryside live a hard life.八、补全对话(有两项多余)(每小题2分，共10分)A：How was your day off, Larry? Did you have a good time?B：Oh，no! ________(66)A：Really? What happened?B：Well，we went camping and the weather was terrible.________(67)A：Oh，that's too bad.B：Ugh! Because the weather was so bad, we went for a drive.________(68) It was really boring.A：Sounds terrible, Larry.B：How about your day off, Tony?A：It was terrible! I studied very hard for my math test last week.________(69) When I woke up, it was already 12 o'clock.I got up and went to my friend Dave's house, but he wasn't there.________(70)B：So what did you do then?A：I helped my mom and dad clean the yard.B：Sounds like a busy day off.A．But I don't like driving.B．There were many people there.C．It was quite awful.D．He was at the beach!E．I felt really excited.F．So I slept late.G．It rained and rained all day long.九、词汇运用(每小题1分，共10分)(一)根据汉语提示完成句子71．I want to go on vacation but I can't________(决定) when to go.72．Can you find any________(不同点) between the twin brothers?73．We have lots of ________(活动) after school.We like them very much.74．You can see an old museum between the two tall ________(建筑物)．75．I want to buy an________(雨伞). The old one is broken.(二)用所给单词的适当形式填空76．That was an________(enjoy) experience for me.77．Do you keep________(diary) every day?78．I________(wonderful) who can help us do that.79．I can learn English by________(I)．80．Is your father a________(trade) or a teacher?十、综合运用(每小题1分，共10分)(词数：约100；建议用时：5分钟)Last month we had a w________(81)time on Mount Tai. The weather there w________(82)very nice. When we a________(83), we began to climb the mountain. It took us the whole night to get to the t________(84) of the mountain.In the morning, we s________(85)the sea of clouds on Mount Tai. In the daytime we visited a temple(寺庙). In the evening, we had a big d________(86) in a local restaurant.The food tasted delicious because we were so h________(87). But the next day it began to rain. B________(88) of the heavy rain, we d________(89) to stay there for another day.I like climbing Mount Tai and I think the t________(90) was quite enjoyable.十一、书面表达(10分)今天是7月5日，星期日。
《典中点》第一单元达标测试卷
第一单元达标检测卷时间：60分钟满分：100分一、基础训练营(37分)1．每组中有一个注音是错的，请找出来打“×”，并在后面的括号里改正。
(6分)(1)惠崇．(chóng)河豚．(tún)衣裳．(shànɡ）()(2)翩．翩起舞(piān)闲散．(sàn)斑．点(bān)( )(3)小圆晕．(yùn)疲倦．(juǎn)几痕．细线(hén)() 2．选择正确的字填进括号里。
(6分)(1)梅枚( )子(2)潦缭( )乱(3)胀帐饱( ) (4)融熔消( )(5)篷蓬莲( ) (6)姿资( )产3．仿写。
(6分)(1)例：剪刀似的尾巴→剪尾柳叶一样的眉毛→( )(限两个字)杏子一样的眼睛→( )(限两个字)(2)例：轻风微微地吹拂着小溪( )地( )着细雨( )地( )着4．判断：加点字意思相同的打“√”，不同的打“×”。
(3分)(1)不光是我一．朵，一．池的荷花都在舞蹈。
( )(2)小溪泛尽却．山行。
在困难面前，他并没有望而却．步。
( )(3)圆点是有定数的，不能瞎．点。
请动动脑筋，不要瞎．猜。
( ) 5．读拼音，写词语。
(10分)6．句子练习。
(6分)(1)修改句中用得不恰当的词语：这只小狗的鼻子真灵活，老远就闻到了食物的气味。
_____________________________________________________(2)体会句子表现了燕子飞行的什么特点：叽的一声，已由这里的稻田上，飞到那边的高柳下了。
_______________________________________________________ 二、综合展示厅(6分)7．语言交际：春天到了，为了更好地观察蚕的生长，小明决定养两只蚕。
但小明的妈妈不同意，认为小明这是不爱学习的表现。
请你为小明写一段话，说服他妈妈。
(3分)________________________________________________________ ________________________________________________________ 8．做一份简单的昆虫备忘录。
hk版八年级下数学典中点
hk版八年级下数学典中点摘要：一、引言二、HK 版八年级下数学典中点的概述1.内容简介2.特点与优势三、HK 版八年级下数学典中点的使用建议1.针对不同学生的需求2.提高学生的学习兴趣与动力3.与课堂教学相结合四、HK 版八年级下数学典中点在数学学习中的重要性1.培养数学思维能力2.巩固基础知识3.提高考试成绩五、结论正文：【引言】HK 版八年级下数学典中点是一本针对初中八年级下学期学生的数学辅导教材，许多学生通过使用这本教材取得了显著的数学学习成果。
本文将对HK 版八年级下数学典中点进行详细介绍，并探讨其在数学学习中的重要性。
【HK 版八年级下数学典中点的概述】HK 版八年级下数学典中点涵盖了初中八年级下学期数学课程的所有知识点，包括几何、代数、概率与统计等内容。
每个知识点都配有详细的例题解析和练习题，帮助学生巩固所学知识。
此外，该教材还注重培养学生的数学思维能力，提高其解决实际问题的能力。
【HK 版八年级下数学典中点的特点与优势】HK 版八年级下数学典中点的特点在于其内容的全面性与系统性。
它不仅涵盖了所有课程知识点，还能够根据学生的实际需求进行有针对性的讲解和练习。
此外，该教材的题目设置灵活多样，既注重基础知识的巩固，又能够激发学生的思考。
【HK 版八年级下数学典中点的使用建议】针对不同学生的需求，教师和家长可以根据学生的实际情况，指导他们使用HK 版八年级下数学典中点进行自主学习和复习。
为了提高学生的学习兴趣与动力，可以鼓励他们参加一些数学竞赛或活动，将所学知识运用到实际中。
同时，HK 版八年级下数学典中点也可以与课堂教学相结合，作为课堂教学的补充和延伸。
【HK 版八年级下数学典中点在数学学习中的重要性】HK 版八年级下数学典中点对于培养学生的数学思维能力具有重要意义。
通过对教材的学习，学生可以掌握数学的基本概念、定理和公式，并学会运用这些知识解决实际问题。
同时，该教材还可以帮助学生巩固基础知识，提高考试成绩。