英语四级线性图作文【一】
①From what has been discussed / mentioned above , we may conclude that … ②Therefore , it is not difficult to draw / come to the conclusion that … ③It is high time that something was done about … ④From all the reasons / consideration above , it is evident / clear / obvious that … ⑤Taking into account all these factors , we may reach the conclusion that … ⑥Given the reasons / consideration I have just outlined / discussed / presented , I strongly recommend that … ⑦It is clear , therefore , that … ⑧All in all ,what really matters is , in fact , to … ⑨It is essential that effective measure be taken to … ⑩From what has been discussed above , we may reasonably arrive at the conclusion that … ⑾ In conclusion ,the most important is … ⑿ On the whole , it is high time that every one … ⒀ As a result , we should take some effective steps to … ⒁ Judging by the figures / statistics , it is not difficult to see that … ⒂ Only in this way / in so doing , can be really …(6
英语四级线性图作文【二】
①As the graph depicts , … ②From the cartoon /picture , we can see that … ③According to the statistics shown in the first /second graph , ④The table shows / indicates / reveals that … ⑤It can be seen /concluded from the picture / table / figures that …(2
英语四级线性图作文【三】
last weekend we went to the countryside to have a picnic.we took several sandwiches and some bottles of water with us for lunch. of course we didn't forget to take some fruit and we even took some tomatoes and cucumbers.
we left home quite early in order to avoid the traffic jam.about two hours later, we came to a nice place. it was near a river. we put our bicycles under the trees and went swimming. it was a very hot day. the water was very refreshing.
after having a swim, we had lunch in the cool shade under the trees. then we went for a walk. we didn't come back home until the night fell.
上周末，我们去乡下野餐。我们带上了几个三明治和几瓶水午饭时吃。当然我们也没有忘记带上一些水果。我们甚至还带了几个西红柿和几条黄瓜。
为了避开交通高峰，我们很早就出发了。大约过了两个小时，我们来到了一个不错的.地方。它附近有一条河，我们把车子放在树下就去游泳。天气很热，河水使人振奋。
游完泳，我们在树荫下吃了午饭。然后我们去散步。直到夜幕降临，我们才回家。
it took us about two hours by bike to get to the nice place in the countryside. there was a rive there. the water was clean and it was a good place to swim. we threw our bikes on the ground
and jumped into the water. it was hot, but the water made us refreshed. after we swam around:'the river, we were tired.
we took out the sandwiches and water, and had our picnic in the shade under the trees. the most popular food are sausages and tomatoes.
after lunch we took a walk. there we saw many beautiful flowers and GREen grass. we smelled sweet air. how nice the picnic was!
我们骑车花了约两个小时，终于到了野外那个美丽的地方。那里有一条小河，河水清澈，真是个游泳的好地方。我们把自行车往地上一搁，就跳进河里。天气真热，河水让人感到舒爽。游了几个来回，我们有些累了。
我们拿出准备好的三明治和水，开始在树阴下野餐。最受欢迎的食品是香肠和西红柿。
午饭后，我们散步。在那儿我们看见许多漂亮的花和碧绿的草，我们闻到空气的芬芳。多么愉快的野餐啊!
英语四级线性图作文【四】
课题：简单的线性规划
线性约束条件：关于x、y的一次不等式（或方程）组成的不等式组所表示的平面区域。
线性目标函数：目标函数为x、y的一次解析式。(目标函数：欲达到最大值或最小值所涉及的变量x、y的解析式。
线性规划问题：求线性目标函数在线性约束条件下的最大值或最小值的问题。
可行解：满足线性约束条件的解（x、y。
可行域：所有可行解组成的集合。
最优解：使目标函数取得最大值或最小值的可行解。
父母的殷切期望，亲人们的寄托，老师的期待，社会的希望，升学的压力，学习任务的繁重，为自己前途的打算……那是一条条不等式画出的线条，那斜率相差无几的线条，却是数也数不清的线条。于是构成了一个诺大的区域，线条密集得让人头皮发麻。擦去边角多余的线条，才发现围成的区域已近乎一个圆了。再也不会有棱角，再也不会有锋芒了。
我们，就是那条目标函数。我们上下反复地移动着，只为寻求那最优解。最大值是怎样去取得最优异的学习成果；最小值就是怎样寻求最有效的学习方法，最高的学习效率。
我们反复地移动着，寻找着，可那孤形的曲线让我们的寻找过程变得好艰难，却还是难以找到那个我们一直在寻找的位置。而且还是那么一个偌大的区域。也许，好不容易在可行域中找到了那个位置，可那点的坐标呢，没有坐标我们又怎么能验证它的价值呢？
在可行域里，我们生存的好辛苦，好疲惫。
也曾尝试挣脱那厚实的\'线圈成的地方，去寻求外面那更广阔、更自由的空间，没有约束，没有沉重，没有疲惫。
可我们无法做到，我们注定在可行域里才会有意义。
也不知道，如果我们真的挣脱了，我们又将会是什么样。可我们明白，那样只会是遍体鳞伤。没有世外桃源，我们就只是生存在这个世界中，这个实实在在的，充满竞争的世界。
我们只是希望，哪天那直线的条数能被我们数清，我们又有了那棱角，那锋芒。我们每个人都有着不同的区域，形状的不同，约束条件的不同，而不是每个人都属于那个如出一辙的偌大的圆。那样，我们才是我们自己，不同于别人的自己，我们不必为寻找最优解的位置疲惫不堪，而我们要做的就是顺着最优解的方向一直走下去，把珍贵的时间用于对那种有意义的探索。而实际上，节省了寻找最优解的时间，我们也就找到了一种最优解。
我们是目标函数，我们有不同的形式，可以得到不同的结果，我们寻求最优的我们，只要那可行域简洁些，真的，我们能做的很好，在各个方面。因为，我们有能力，去一次次将我们自己、各方面的自己，放到那可行域中去试探，寻找最优解的位置。
数学课上，线性规划的题做得很麻烦，因为又是画图，又要找区域、确定目标函数、找最优解。
可我们不会怕麻烦，因为我们在寻求，寻求最优解……
