单选题The primary topic of the passage is which of the following?A The origin of bioluminescence in plankton predatorsB The disadvantages of bioluminescence in microorganismsC The varieties of marine bioluminescent life formsD Symbiotic relationships between
题目
The origin of bioluminescence in plankton predators
The disadvantages of bioluminescence in microorganisms
The varieties of marine bioluminescent life forms
Symbiotic relationships between predators and their prey
Hypotheses on the causes of bioluminescence in plankton
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更多“单选题The primary topic of the passage is which of the following?A The origin of bioluminescence in plankton predatorsB The disadvantages of bioluminescence in microorganismsC The varieties of marine bioluminescent life formsD Symbiotic relationships between”相关问题
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第1题：
Which of the following can be utilized from a Legacy form without additional coding？（）
- A、Field Validations
- B、Query Save logic
- C、Dialog forms
- D、All of the above
正确答案:A -
第2题：
问答题◆Topic 7: Living Alone Questions for Reference: 1. More and more people are living by themselves today. Explain the reason. 2. What’s the advantages and disadvantages of living alone? 3. Which is the best way to have a happy life according to your understanding?正确答案： 【参考答案】
You come home alone after a long day at work. You open the door to your home. No one is there. Is it blessed silence you hear -or echoing emptiness?
Millions of people who live alone today may have either experience. Some love living alone, yet others wish they didn’t have to.
When they open that door at night, people who live alone do not have to put up with demands or listen to someone’ s noise or meet anyone’ s dinner deadlines. They do not have to debate about which TV program to watch or stay off the phone because someone else is expecting an important call. No one else messes up their kitchen.
But when they are sick, no one else will bring them an aspirin or call the doctor. Preparing dinner for one can be difficult, and eating dinner for one night after night can be very lonely. Perhaps no one really cares what they did all day. If they are feeling sad, there may be no one to cheer them up. Some people who live alone say the worst times come when something very good happens because there is no one to share the joy.
During the course of a lifetime, one may sometimes live with others and sometimes live alone.
Each way of life has its advantages. Learning to take advantage of them is one key to contentment.解析： 暂无解析 -
第3题：
单选题Which one of the following is most appropriate as the title of the passage?AElephants and Mice
BMan and Beast
CElephant and Bees
DWild Life Protection
正确答案： C解析：
该段录音中指出在非洲很多地方，农民经常被时常造访的大象弄得疲惫不堪，而在这种情况下，某项最近发表的研究指出了一个解决办法，即用大象害怕的一种小生物——蜜蜂。接着录音就此展开了描述，因此选C。 -
第4题：
单选题Which of the following best describes the relationship between Passage 1 and Passage 2?APassage 2 offers a criticism of the political theory outlined in Passage 1.
BPassage 1 expands upon an argument made in Passage 2.
CPassage 1 refutes the conclusion drawn in Passage 2.
DPassage 2 offers a balanced counterpoint to the biased opinions expressed in Passage 1
EPassage I offers evidence to support the main idea of Passage 2.
正确答案： E解析：
第一篇文章简短地描述了遏制政策。第二篇文章主要讲的是美国之所以没能稳定越南局势是因为美国使用了遏制政策。A项最好的解释了两篇文章的关系。 -
第5题：
单选题Which of the following is true about email according to the passage?AEmail reduces other forms of contact.
BEmail enhances other forms of contact.
CAbout 25% of network members are contacted by email weekly.
DWith email, people try hard to maintain more relationships.
正确答案： C解析：
录音中指出“Contrary to fears that email would reduce other forms of contact…”(与电子邮件会减弱其他的交流形式的担心相反…)，由此可推测出电子邮件可能会加强其他交流形式，所以选B。 -
第6题：
单选题According to the passage, Piaget and Keasey would not have agreed on which of the following points?AThe kinds of excuses children give for harmful acts they commit
BThe age at which children begin to discriminate between intentional and unintentional harm
CThe intentions children have in perpetrating harm
DThe circumstances under which children punish harmful acts
正确答案： C解析：
由第一段Piaget…under age seven do not take into account the intentions和Keasey… six-year-old children distinguish…可知，两人对儿童形成辨别能力的年龄持不同观点。 -
第7题：
单选题Which of the following relationships should occur between the temperature developed in a combustion space, and the compression ratio of the engine?（）AHigher compression ratios create higher temperature
BHigher temperatures create higher compression ratios
Clow temperatures create higher compression ratios
DHigher compression ratios create low temperatures
正确答案： B解析： 暂无解析 -
第8题：
单选题The primary topic of the passage is which of the following?AThe origin of bioluminescence in plankton predators
BThe disadvantages of bioluminescence in microorganisms
CThe varieties of marine bioluminescent life forms
DSymbiotic relationships between predators and their prey
EHypotheses on the causes of bioluminescence in plankton
正确答案： A解析：
作者在文中第二句先表明水下微生物普遍发光的原因“remains obscure, and suggested explanations are controversial”，接着详细阐述了一些相关的假想，因此E项概括出了文章的主旨，最符合题目要求。 -
第9题：
单选题The author mentions the activities of fisheries in order to provide an example of ______.Ahow ubiquitous the phenomenon of bioluminescence is coastally
Bhow predators do make use of bioluminescence in locating their prey
Chow human intervention imperils bioluminescent microorganisms
Dhow nocturnal fishing expeditions are becoming more and more widespread
Ehow limited bioluminescence is as a source of light for human use
正确答案： D解析：
作者没有否定“predators make use of bioluminescence in locating their prey”，但也给出了另外的例子，即“human predators (fishers) who are drawn to their prey (the fish that prey on plankton) by the luminescence of the plankton”，因此B项最符合题目要求。 -
第10题：
名词解释题生物发光技术 bioluminescence technique正确答案： 用发光酶基因标记微生物的检测手段。解析： 暂无解析 -
第11题：
单选题The passage is primarily concerned with which of the following?ADescribing the life cycle of the Plasmodium protozoan as it relates to the disease malaria
BComparing and contrasting the life cycles of the six variants of the Plasmodium protozoan known to cause malaria
CAddressing the public health implications of the life cycle of the Plasmodium parasite
DProviding information on how a person can avoid infection with malaria
EDescribing the life cycle of the Anopheles mosquito as it relates to the transmission of the Plasmodium protozoan to humans
正确答案： B解析：
主旨题。文章主要在介绍与疟疾原生动物疟原虫的生命周期，故应选A项。 -
第12题：
单选题What is the primary purpose of the passage?ATo compare and contrast two theories on the origin of the caste system in India
BTo shed some light on an aspect of Indian society that can be confusing to outsiders
CTo highlight the social injustices still faced by the Untouchable caste in India today
DTo discredit the theory that the’Arvan Invasio n, ‘brought an end to the Harappan civilization
ETo explain to the reader the distinction between the Brahman and Kshatriya castes
正确答案： E解析：
主旨题。文章主要对印度社会中社会团体的几个基本要素进行了介绍，故本题应选B项。 -
第13题：
单选题Which of the following is true of women’s nurturiring nature according to the passage?AIt is not inborn in any sense.
BIt is inspired by women’s families.
CIt is caused by social prejudice
DIt is partly biological in origin.
正确答案： C解析：
由第二段第三句“But the signs that it is at least partly inborn are too numberous to ignore. (女人具有“照顾别人的特征”至少有部分是天生的，此类迹象多得不容忽视。)”可知，女性的这个特征有先天方面的原因。A项与句意相矛盾，B、C两项文章中均没提到。故选D。 -
第14题：
单选题Possible phase relationships between voltage and current in an alternating current circuit include which of the following conditions?（）ACurrent and voltage may be in phase
BCurrent may lead the voltage
CCurrent may lag the voltage
DAll of the above
正确答案： D解析： 暂无解析 -
第15题：
单选题Which of the following is most clearly similar to a cline as it is described in the second paragraph of the text?AA vegetable market in which the various items are grouped according to place of origin.
BA wheat field in which different varieties of wheat are planted to yield a crop that will bring the maximum profit.
CA flower stall in which the various species of flowers are arranged according to their price.
DA housing development in which the length of the front struts supporting the porch of each house increases as houses are built up the hill.
正确答案： D解析：
词汇理解题。文章第二段第一句提到Biologists call this kind of gradual variation over a certain geographic range a “cline” and interpret clines as strong indications that the variation is adaptive, a response to environmental differences。即cline是受环境影响而产生的某种适应性变化，D项“支撑房子门廊的前方支柱随着房子在山上建造的高度增加而伸长”，与原文的“受环境影响而产生适应性变化”表述一致，本题答案是D项。 -
第16题：
问答题◆Topic 8：Living Alone Questions for Reference: 1) More and more people are living by themselves today. Explain the reason. 2) What’s the advantages and disadvantages of living alone? 3) Which is the best way to have a happy life according to your understanding?正确答案： 【参考答案】
You come home alone after a long day at work. You open the door to your home. No one is there. Is it blessed silence you hear or echoing emptiness?
Millions of people who live alone today may have either experience. Some love living alone, yet others wish they didn’t have to.
When they open that door at night, people who live alone do not have to put up with demands or listen to someone’ s noise or meet anyone’ s dinner deadlines. They do not have to debate about which TV program to watch or stay off the phone because someone else is expecting an important call. No one else messes up their kitchen.
But when they are sick, no one else will bring them an aspirin or call the doctor. Preparing dinner for one can be difficult, and eating dinner for one night after night can be very lonely. Perhaps no one really cares what they did all day. If they are feeling sad, there may be no one to cheer them up. Some people who live alone say the worst times come when something very good happens because there is no one to share the joy.
During the course of a lifetime, one may sometimes live with others and sometimes live alone.
Each way of life has its advantages. Learning to take advantage of them is one key to contentment. 解析： 暂无解析 -
第17题：
单选题Which of the following operating conditions can occur when shims are removed from the joint between the foot of a marine type diesel engine connecting rod and the bearing box?（）ADecreased connecting rod bearing clearance
BIncreased connecting rod bearing clearance
CDecreased compression ratio
DIncreased compression ratio
正确答案： B解析： 暂无解析 -
第18题：
单选题Which of the following is true about coral reefs?AThey play a significant role in biodiversity.
BThey account for 25% of the marine life.
CMore than a quarter of marine life feed on them.
DThey are threatened by marine life and could be killed.
正确答案： D解析：
录音中提到“Coral reefs are extremely important for biodiversity, it provides habitats to over 25% of all marine life.”，意思是：珊瑚礁对生物多样性极度重要，它为超过25%的海洋生物提供栖息地。所以A项正确。另外，根据“coral bleaching is threatening many of the world’s coral reefs”(珊瑚礁白化正在威胁着世界上的许多珊瑚礁)可知，D项错误。 -
第19题：
单选题Which of the following is the main idea of this passage?ATeaching morals and values has been a frequently discussed topic in the past few years.
BThe author and his staff embed virtues into lessons and school life to encourage character development in children.
CKids throughout the population face the same needs, the same challenges, and the same realities in their lives.
DRole plays are an excellent way of getting students to practice their English.
正确答案： B解析：
文章第一段提到，孩子们的性格发展（development of character），第二段提到“a child’s moral literacy is strengthened when...”，接下来第三段提到“and a chance for the virtue to embed itself”（把美德嵌入课堂教学和学校生活中，帮助孩子们性格的发展），到最后站在教育者角度提出建议。B项意思是：作者和他的工作人员将美德嵌入课程和学校生活，鼓励儿童的性格发展。此项表达全面，故选B。 -
第20题：
多选题Which of the following are primary differences between a laptop and a desktop CPU？（）Aheat production
BL2 Cache
Cclock speed
Dfront side bus
Epower consumption
正确答案： C,D解析： 暂无解析 -
第21题：
单选题Which of the following best describes the passage as a whole?AAn outline for future research
BAn expanded definition of commonly misunderstood terms
CAn analysis of a dispute between two theories
DA discussion of research findings in an ongoing inquiry
正确答案： C解析：
文章列举Piaget，Keasey，Nesdale，Rule，Darley等人的研究结果，对儿童的是非判别能力这一议题进行讨论。 -
第22题：
单选题Which of the following is an appropriate title for this passage?AResearchers Have Pointed Out the Disadvantages of Breast-feeding
BResearchers Have Found Out the Shortcomings of Formula
CBreast-feeding Improves Chances of Success
DBreast-feeding Benefits Both Mother and Baby
正确答案： C解析：
文章首段首句交代了文章主旨大意“Babies who are breast-fed may be more likely to be successful in life...”（与配方奶粉喂养的孩子相比，母乳喂养的孩子在将来更可能取得成功）。后文就是对母乳喂养的好处通过跟踪调查进行具体说明。A、B两项说的是缺点，不符合文章主题，D项说的是母乳喂养对妈妈和孩子的好处，但本文主要讲的是对孩子的好处，并没有提到对妈妈有好处。选项C正确。 -
第23题：
单选题The passage supplies information for answering which of the following questions?AWhen did the new protectionism arise?
BWhy is the new protectionism so popular in northern European countries?
CDoes the American government play a more active role in economic life than the British government?
DWhy does the government intervene in economic life?
正确答案： A解析：
综观全文，只有D项与全文关系较密切，因为在文章的第二段回答了这一问题，而第三段是承上启下，十分重要。因此D项为正确答案。 -
第24题：
单选题The passage provides an answer to which of the following questions?AWhat is the explanation for the phenomenon of bioluminescence in marine life?
BDoes the phenomenon of plankton bioluminescence have any practical applications?
CWhy do only certain specimens of marine life exhibit the phenomenon of bioluminescence?
DHow does underwater bioluminescence differ from atmospheric bioluminescence?
EWhat are the steps that take place as an individual microorganism becomes bioluminescent?
正确答案： B解析：
根据上一题的答案可知，“the phenomenon of plankton bioluminescence”能够运用到实际，即可以帮助“fisheries to increase their catch of fish that prey on plankton”， 因此B项符合题目要求。文中没有给出海洋微生物体发光的确切原因，A项不正确；B项与文中信息不符，并非只有“certain specimens of marine life”存在发光现象；C、E均在文中没有涉及。