合理分配时间，检查很有必要。不要急于迅速做完，踏踏实实做完每一个题后认真检查。先检查有理数混合运算、整式化简求值、解方程三类型题。再检查填空题，最后是选择题。解方程的检查可以将解带入原方程进行检验，如果等号两边不相等要立即查找每一步骤，找出错误改正。4、不纠结于不会的题，但不放弃“难题”，当遇到自己不会做的题时，如果看题3遍都毫无思路，应该马上跳至下一题。所谓的“难题”难在条件多，题意长，多读几遍题，弄清所有的已知条件，充分利用，就能得到应得的分数。二、技巧准备1、选择题有些选择题可以代入答案验证；如方程类型，代入验证比直接求解要简单有些题目用赋值法（用某数字如1、2、0、-1、-2等代替字母），但是让字母的值一定要符合题意。2、填空题书写要清晰，切忌乱改乱涂；要求只填一个答案即可的一定不要多填，多填是毛病；注意有多解的情况；填代数式的结果应化为最简结果，即去括号合并同类型。是多项式要添加括号。3、解答题（1）计算题（计算考的是细心，不会太难的，一步步来，不要急着快点写完）易错点：运算顺序；运算符号；别抄错数字和符号！往往第二、第三步的运算顺序出错！（2）化简后求值题化简时原代数式可以用”原式”代替，也可以抄一遍，但要抄准确。每一步变形用“=”连接。化简完后，按步骤书写：当a=……时，原式=……=……。当字母的值没有直接给出时，要写出一些步骤求字母的值。化简正确是关键，易错点：去括号时漏乘，应乘遍每一项；括号内部分项忘了变号，要变号都变号；合并同类项时漏项，少抄了一项尤其常数项。字母颠倒的同类项，注意合并彻底。⑶解方程组、不等式、不等式组解方程组时：每一步只作一种变形，一步步来，不要跨度太大而出错，解完可以带入原方程检验对不对；解不等式、不等式组：严格按步骤去做，注意解集的确定，要利用数轴正确定解集；易错点：①去分母时漏乘不含分母项（整数项也要乘以最小公倍数）；②去括号时漏乘（没乘遍每一项）、部分项忘记变号（要变号都变号）；③移项忘记变号；④将未知数系数化为1时分子分母位置颠倒（x的系数作分母）；⑷方程不等式的应用题按列方程一般步骤：审、设、列、解、验、答进行；按步骤得分，不可缺项。（一定要多看几遍题目!划出条件词语，把题目意思搞懂后在动笔。列方程和不等式时，记得把题目已知条件列在草稿纸上，还有中文等式）方程思想是最常用的一种数学思想，不管在小题还是大题中，列方程求解很实用。成功历来都垂青于有准备的人！数学没有你想的那么难！你认为难是因为你的计算老是出错，你的理解没有到位，你的知识应用还没有熟练……补救的办法就是：①细心计算；②多读几遍题，把意思弄懂；③做完后反复检查。相信聪明的你一定取得令大家满意的成绩，开开心心过暑假！以自信轻松的心情参加考试，当成是完成一项任务，加油！！During breeding season，a male penguin（企鹅）will offer a small stone to a female penguin as a gift．If she takes it，they will become partners．When the female penguin lays an egg，she and her partner may carry it on their feet，because some penguins don't build nests（鸟巢）．Crocodiles（鳄鱼）swallow（吞）stones．Crocodiles always swallow their food instead of eating it like other animals．They swallow stones which break the food into very small pieces in their stomachs．These stones may stay in their stomachs all their lives．Elephants use plants to treat pain or other illness．Scientists once found a pregnant（怀孕的）elephant in Africa who ate a kind of plant which was not part of her normal food．Four days later，she gave birth to a baby elephant．The same plant was used by the local pregnant women．根据短文内容，判断下列句子正误．正确的用"A"表示，不正确的用"B"表示．（1）A cow hates making friends with other cows．（2）All the male penguins will build nests if the female penguins lay eggs．（3）Crocodiles swallow stones to help with digestion（消化）．（4）Elephants eat plants only when they are hungry．（5）The passage mainly tells us some surprising facts about animals．24．（5.00分）What was discovered by accident？The answer is penicillin（青霉素）．It kills germs．By killing germs，it saves lives．Suppose you are sick．You go to a doctor．She examines you．She says you have a" staph'" infection（葡萄球菌感染）．She gives you some medicine．You take it．The medicine knocks out the staph．Soon you are well．Before penicillin，this would not happen．Staph was almost sure death．Everyone wanted a medicine．Laboratories worked day and night．They grew the staph in small dishes．Then they tried to kill it．Nothing worked．The laboratory dishes had covers on them．They kept things from falling into dishes．Molds（霉菌）were a big worry．They are always in the air．You can't see them．They're too small．There are thousands of different molds．Molds can make an experiment（实验）fail．That's why dishes are covered．Dr．Alexander Fleming was working to kill the staph germ．He worked for years．One day he took a cover off a dish．He looked inside．There was a thick growth of staph germ．There was also some mold．Then he saw something strange．Where the mold was，there was no growth of staph．This is what Fleming probably thought．"By accident，I found a mold to kill the______staph．"This is how penicillin was found．But here's the real miracle（奇迹）．There are thousands of kinds of molds．But only one kind can kill staph．The mold must have fallen into the dish a few days before．The cover was probably off only a few seconds（秒）．In those few seconds the right mold fell into the right dish．Another man might have thrown the dish away．But Fleming was very careful and smart．He understood what the mold did．How lucky the humans were !根据短文内容，选择最佳答案．（1）During the experiments to find a medicine for staph infections，．A．the dishes were not coveredB．staph and mold were put togetherC．mold was kept in small dishesD．staph was grown in small dishes（2）The word"______" means ""．A．famousB．scaryC．healthyD．endangered（3）The last paragraph suggests that．A．accidents happen to everyoneB．the careful person does not have accidentsC．the careless person will miss valuable chancesD．luck is enough when doing scientific experiments（4）Most of this passage is written by．A．telling an unusual storyB．showing the results of experimentsC．offering some reasonsD．giving some advice（5）This passage is mainly about．A．medicine for a staph infectionB．useful accidentsC．Dr．Fleming's researchD．discovering penicillin25．（5.00分）He was a poet（诗人）known for the nostalgia（怀旧）he describes in his poems．Now，it' s time for us to express（1）nostalgia for this great writer．On December 14，2017 the famous Chinese poet Yu Guangzhong passed away in Taiwan．He was born in 1928 in Nanjing，Jiangsu．Yu and his family moved to Taiwan in the 1950s．He lived and worked there（2）his death．Nostalgia is Yu's famous poem in which he（3）his homesickness（乡愁）for the Chinese mainland when he was in Taiwan．The poem came out in 1971，and it remains highly popular among Chinese（4）worldwide．Even those who know little about literature enjoy lines from the poem．The poem is（5）in Chinese high school textbooks．26．（5.00分）Besides his（1）in poems，Yu was also a（2）translator（翻译家），essay writer and critic．