Question

【题目】There are purple clothes, purple handbags, purple bicycles, purple furniture, even purple computers! So purple is one of the most______colors today. But in the past, purple was a very expensive and unusual color. Let’s take a look at the rich______of the color purple.

Some scientists believe that the first plants to appear on Earth over 500 million years ago______looked purple, not green. Plants today are green because______use green chlorophyll (叶绿素) to produce energy.______these early plants probably used something called retinal, which is a dark purple color.

During the time of the roman Empire (37 BC-476 AD), it was very______to make purple dye (染料). The dye came from sea snails (海螺) .But10.000 dead sea snails______you just one gram (克)of purple dye… as well as a very bad smell! This______purple dye was called Tyrian purple, and it was the preferred______of emperors.

In 16th--century England, purple was______for the kings family members. Queen Elizabeth Is clothes were purple, but ordinary people were not allowed to______the color.

In 1856. William Perkin, an 18-year-old______student, noticed something strange while doing an experiment (实验). The chemicals (化学药品) he used to clean his instruments______with the chemicals he used in his experiment and produced a bright purple color. This______Perkin to start a company using this chemical mixture to make purple dye. The dye was much______than sea snail dye. Thanks to Perkin, now anyone can afford to wear purple clothes.

【1】A. peaceful B. popular C. exciting D. serious

【2】A. history B. style C. research D. product

【3】A. gradually B. especially C. exactly D. probably

【4】A. others B. they C. we D. some

【5】A. And B. So C. But D. Until

【6】A. dangerous B. common C. difficult D. strange

【7】A. got B. passed C. wasted D. cost

【8】A. basic B. harmful C. special D. perfect

【9】A. color B. smell C. plant D. animal

【10】A. even B. never C. seldom D. only

【11】A. wear B. sell C. change D. make

【12】A. geography B. science C. art D. math

【13】A. compared B. mixed C. collected D. kept

【14】A. survey B. suggestion C. discovery D. exam

【15】A. healthier B. thicker C. cheaper D. darker

Answer 1

【答案】

【1】B

【2】A

【3】D

【4】B

【5】C

【6】C

【7】A

【8】C

【9】A

【10】D

【11】A

【12】B

【13】B

【14】C

【15】C

【解析】试题这篇说明文通过对比和举例，介绍了紫色的来历和发展，说明紫色曾经是是一种非常昂贵和不寻常的颜色，但在科学家Perkin的努力下，用两种化学混合物制造紫色染料，终于使紫色成为当今最流行的颜色之一。

【1】句意：所以紫色是当今最流行的颜色之一。考查形容词辨析题。根据开头There are purple clothes, purple handbags, purple bicycles, purple furniture, even purple computers!，可知紫色很流行，故选B。

【2】句意：让我们来看看紫色的丰富历史。考查名词辨析题。根据下一段开头Some scientists believe that the first plants to appear on Earth over 500 million years ago probably looked purple, not green.，可知谈的是紫色的历史，故选A。

【3】句意：5亿多年前出现在地球上的第一批植物可能看起来是紫色的，而不是绿色的。考查副词辨析题。A. gradually渐渐地；B. especially尤其；C. exactly真地；D. probably可能。本句表推测，需用probably；根据句意语境，可知选D。

【4】句意：今天的植物是绿色的，因为它们用绿色的叶绿素产生能量。考查代词辨析题。空格指代上文的plants，复数形式，需用they；根据句意语境，可知选B。

【5】句意：但是这些早期的植物可能使用了一种叫做视网膜的东西，它是一种深紫色。考查连词辨析题。空格前后是现在的和早期的对比，属于转折关系，需用but连接；根据句意语境，可知选C。

【6】句意：在罗马帝国时期，很难制造紫色染料。考查形容词辨析题。根据下文The dye came from sea snails. But 10.000 dead sea snails got you just one gram of purple dye…10只死海蜗牛只得到一克紫色染料，可知很难得，故选C。

【7】句意：染料来自海螺。但是10000只死海蜗牛只给了你一克紫色染料。考查动词辨析题。A. got得到；B. passed通过；C. wasted浪费；D. cost价值。根据句意语境，可知后面三项意思都与句意不合，故选A。

【8】句意：这种特殊的紫色染料被称为提利紫色，它是皇帝的首选颜色。考查形容词辨析题。根据前文The dye came from sea snails. 染料来自海蜗牛，可知很特别，故选C。

【9】句意：它是皇帝的首选颜色。考查名词辨析题。根据上文was called Tyrian purple，可知是颜色，A. basic基础的；B. harmful有害的；D. perfect完美的，均不合句意，可排除。故选A。

【10】句意：在第十六世纪的英国，紫色只是为国王的家庭成员。考查副词辨析题。根据下文but ordinary people were not allowed to wear the color.普通人不允许穿这种颜色，可知是“只为王室”，故选D。

【11】句意：但是普通人是不允许穿这种颜色的。考查动词辨析题。根据句意语境，可知wear符合句意，故选A。

【12】句意：1856年，18岁的理科学生William Perkin在做实验时注意到一些奇怪的东西。考查名词辨析题。根据下文The chemicals he used to clean his instruments mixed with the chemicals he used in his experiment and produced a bright purple color.，两种化学药品混合产生了反应（产生紫色），可知做的是科学实验，故选B。

【13】句意：他用来清洗仪器的化学药品与他在实验中使用的化学药品混合，产生了明亮的紫色。考查动词辨析题。mix with（使）与……混合；根据句意语境，可知选B。

【14】句意：这一发现使Perkin创办了一家用这种化学混合物生产紫色染料的公司。考查名词辨析题。根据上文William Perkin, noticed something strange while doing an experiment. Perkin可知是在做实验时注意到的，所以是他的发现，故选C。

【15】句意：这种染料比海螺染料便宜得多。考查形容词比较级。根据下文Thanks to Perkin, now anyone can afford to wear purple clothes. 任何人都买得起紫色衣服，可知更便宜，故选C。