请阅读短文，完成此题。Polyester (聚酯 ) is now being used for bottles. ICI, the chemicals and plastics company, believes that it is now beginning to break the grip of glass on the bottle business and thus take advantage of this huge market.All the plastics manufacturers have been experiencing hard times as their traditional products have been doing badly world-wide for the last few years. Between 1982 and 1984 the Plastics Division of ICI had lost a hundred and twenty million dollars, and they felt that the most hopeful new market was in packaging, bottles and cans.Since 1982 it has opened three new factories producing "Melinar", the raw material from which high quality polyester bottles are made.The polyester bottle was born in the 1970s, when soft drinks companies like Coca Cola started selling their drinks in giant two-liter containers. Because of the build-up of the pressure of gas in these large containers, glass was unsuitable. Nor was PVC, the plastic which had been used for bottles since the 1960s, suitable for drinks with gas in them. A new plastic had to be made.Glass is still cheaper for the smaller bottles and will continue to be so, unless oil and plastic become much cheaper, but plastic does well for the larger sizes.Polyester bottles are virtually unbreakable. The manufacturers claim they are also lighter, less noisy when being handled, and can be reused. Shopkeepers and other business people are unlikely to object to a change from glass to polyester, since these bottles mean few breakages, which are costly and time-consuming. The public, though, have been more difficult to persuade. ICI's commercial department is developing different bottles with interesting shapes, to try and make them visually more attractive to the public.The next step could be to develop a plastic which could replace tins for food. The problem here is the high temperatures necessary for cooking the food in the container.Plastics of various kinds have been used for making bottles__________.查看材料A．since 1982B．since the 1970s but only for large bottlesC．since the 1960s but not for liquids with gas in themD．since companies like Coca Cola first tried them
请阅读短文，完成此题。
Polyester (聚酯 ) is now being used for bottles. ICI, the chemicals and plastics company, believes that it is now beginning to break the grip of glass on the bottle business and thus take advantage of this huge market.
All the plastics manufacturers have been experiencing hard times as their traditional products have been doing badly world-wide for the last few years. Between 1982 and 1984 the Plastics Division of ICI had lost a hundred and twenty million dollars, and they felt that the most hopeful new market was in packaging, bottles and cans.
Since 1982 it has opened three new factories producing "Melinar", the raw material from which high quality polyester bottles are made.
The polyester bottle was born in the 1970s, when soft drinks companies like Coca Cola started selling their drinks in giant two-liter containers. Because of the build-up of the pressure of gas in these large containers, glass was unsuitable. Nor was PVC, the plastic which had been used for bottles since the 1960s, suitable for drinks with gas in them. A new plastic had to be made.
Glass is still cheaper for the smaller bottles and will continue to be so, unless oil and plastic become much cheaper, but plastic does well for the larger sizes.
Polyester bottles are virtually unbreakable. The manufacturers claim they are also lighter, less noisy when being handled, and can be reused. Shopkeepers and other business people are unlikely to object to a change from glass to polyester, since these bottles mean few breakages, which are costly and time-consuming. The public, though, have been more difficult to persuade. ICI's commercial department is developing different bottles with interesting shapes, to try and make them visually more attractive to the public.
The next step could be to develop a plastic which could replace tins for food. The problem here is the high temperatures necessary for cooking the food in the container.
Plastics of various kinds have been used for making bottles__________.
查看材料
Polyester (聚酯 ) is now being used for bottles. ICI, the chemicals and plastics company, believes that it is now beginning to break the grip of glass on the bottle business and thus take advantage of this huge market.
All the plastics manufacturers have been experiencing hard times as their traditional products have been doing badly world-wide for the last few years. Between 1982 and 1984 the Plastics Division of ICI had lost a hundred and twenty million dollars, and they felt that the most hopeful new market was in packaging, bottles and cans.
Since 1982 it has opened three new factories producing "Melinar", the raw material from which high quality polyester bottles are made.
The polyester bottle was born in the 1970s, when soft drinks companies like Coca Cola started selling their drinks in giant two-liter containers. Because of the build-up of the pressure of gas in these large containers, glass was unsuitable. Nor was PVC, the plastic which had been used for bottles since the 1960s, suitable for drinks with gas in them. A new plastic had to be made.
Glass is still cheaper for the smaller bottles and will continue to be so, unless oil and plastic become much cheaper, but plastic does well for the larger sizes.
Polyester bottles are virtually unbreakable. The manufacturers claim they are also lighter, less noisy when being handled, and can be reused. Shopkeepers and other business people are unlikely to object to a change from glass to polyester, since these bottles mean few breakages, which are costly and time-consuming. The public, though, have been more difficult to persuade. ICI's commercial department is developing different bottles with interesting shapes, to try and make them visually more attractive to the public.
The next step could be to develop a plastic which could replace tins for food. The problem here is the high temperatures necessary for cooking the food in the container.
Plastics of various kinds have been used for making bottles__________.
查看材料
A．since 1982
B．since the 1970s but only for large bottles
C．since the 1960s but not for liquids with gas in them
D．since companies like Coca Cola first tried them
B．since the 1970s but only for large bottles
C．since the 1960s but not for liquids with gas in them
D．since companies like Coca Cola first tried them
参考解析
解析：根据第四段“Nor was PVC，the plastic which had been used for bottles since the 1960s．suitable for drinks with gas in them．"可知，作为“plastics of various kinds”中的一种，PVC在1960s就已用于瓶子包装，因此可以判断“plastics of various kinds”在1960s就已用于瓶子包装。
相关考题：
阅读下面一首诗，完成21—22题。(共4分)饮酒（其五）陶渊明结庐在人境，而无车马喧。问君何能尔？心远地自偏。采菊东篱下，悠然见南山。山气日夕佳，飞鸟相与还。此中有真意，欲辨已忘言。21.请从炼字角度说说“采菊东篱下，悠然见南山”妙在何处。（2分）
阅读以下说明和c++码，将应填入(n)处的字名写在的对应栏内。[说明] 以下函数完成求表达式的值，请填空使之完成此功能。float sum ( float x ){ float s=0.0;int sign = 1;(1);for(inti=1;(2); i+ +){t=t*x;s=s+(3);sign = - sign;(4);}
请仔细阅读以下程序并完成要求。 If((a>2&&b4|| d 请仔细阅读以下程序并完成要求。If((a＞2＆＆b＜3)＆＆(c＞4|| d＜5)){Flag=1；}Else{Flag=0；)请分别按照语句覆盖、判定覆盖、条件覆盖、判定/条件覆盖测试用例。
三、阅读理解：共15题。每道题包含一段短文，短文后面是一个不完整的陈述，要求你从四个选项中选出一项来完成这一陈述。注意：供选择的答案有时可能是短文内容的一个复述，有时则满足了陈述中其他方面的要求，你的选择应与所要求最相符合。请开始答题:31．有些基因使人们总的来说感到快乐一些或者悲伤一些。这句话的意思是：A．总的来说，有些基因使人感到快乐，有些基因使人感到悲伤B．有些基因总的来说使人们要么感到快乐，要么感到悲伤C．有些基因总的来说使人们既感到快乐，又感到悲伤D．总的来说，使人感到快乐和悲伤的原因是部分基因的影响
二、阅读下面短文，从短文后各题所给四个选项(A、B、C、D)中选出能填入相应空白处的最佳选项。共3题，每题1分，共3分。 阅读下面短文，回答从的 114～116 题目。Martin Luther King Jr．was born in Georgia in 1 929．When was still a boy Martin learned that his people，the black Americans，when often treated differently from most of（ ）fellow Americans．Many could not attend good schools，get good jobs，or live in nice houses because of the color of their （ ） .Manin knew that in a free country this was wrong.He wanted to help his black brothers，（ ）he decided to go to school and become a minister.第114题：（ ）A．hisB．thoseC．mostD．their
请认真阅读下列材料，并按要求作答。请根据上述材料完成下列任务：(1)在小学英语教学中，呈现演示的原则有哪些?(2)请根据教学内容确定本课时的教学目标。(3)请设计本节“句型课”的新知呈现环节并说明设计意图。
问答题研究者想探讨这样一个问题：文章的生字密度对学生阅读理解成绩的影响。研究者感兴趣四种生字密度：1：5、1：10、1：15、1：20。 被试：采用随机取样的方法选取被试40人，男性20人，女性20人。视力或矫正视力正常。平均年龄为14.5岁。 材料：选取历史方面的四篇短文（1：5、1：10、1：15、1：20），这四篇短文除了生字密度不同外，在文章的长度、语法的难度上均进行了匹配。每个学生要阅读四篇短文中的每一篇，四篇短文的阅读顺序进行了随机化平衡处理。分析这个实验的自变量、因变量，以及此实验采用什么类型的实验设计（被试间设计还是被试内设计）。
问答题作文提示： 阅读下面一段话后，请谈谈你的看法。（字数：150字左右） 身处他乡，没有朋友，没有亲人在身边时，想家、寂寞便会如影随形。寂寞是每个人都会遇到的情况，寂寞的时候，你如何排遣？如何战胜它？请以“战胜寂寞”为题，写一篇短文。