2017年職稱英語考試理工類補全短文練習4

　　【摘要】2017年職稱英語考試備考進行中，網(wǎng)校為幫助大家備考特分享了“2017年職稱英語考試理工類補全短文練習4”，希望備考2017年職稱英語考試的考生都能順利通關(guān)，更多資料敬請關(guān)注環(huán)球職稱英語考試頻道！

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　　Migration of Monarch Butterflies

　　One of the greatest mysteries in biology—how the monarch butterfly travels thousands of kilometers on its yearly migration—has just been solved.

　　(1)No other butterfly in the world migrates like the orange and black monarchs of North America.(2)Each autumn,thousands travel up to 3,000 km to spend the winter in the mountains of Mexico.There are so many,they almost block out the sky,and you can hear their wings beating.

　　It usually takes the butterflies two months to reach Mexico.After staying five months,they head back up north in the spring.But not one butterfly finishes the whole round-trip.(3)Three generations of butterflies will live and die during the spring journey alone.The fourth and final generation of the year is born in early autumn and will reach the north.But it hardly gets to rest before starting the long journey south to Mexico.

　　The most amazing thing about these butterflies is that they return to the very same tree in Mexico that their great-great-grandparents used the winter before.Past studies have shown that the insects use the sun as a compass to show them the way.

　　(4)This new study now shows that the insects use a "circadian(生理節(jié)奏的)" clock in their bodies as part of their sun compass.In laboratory tests,monarch butterflies were found to fly in the right direction under normal daylight hours.But those flying in 24-hour light headed straight towards the sun.(5)Scientist Steven Reppert,who led the research,said: "We have shown the need for the circadian clock for monarch butterfly migration.When the clock is interrupted,monarchs are unable to fly towards Mexico."

　　A.That is,they no longer had any sense of time.

　　B.They lay eggs along the way and die.

　　C.The circadian clock is useful for monarch butterfly migration.

　　D.Monarch butterflies use the sun to set their body clocks and make their journeys,according to US scientists.

　　E.But experts are unsure how the butterflies change their direction as the sun moves in the sky.

　　F.They cannot live for long periods in cold weather.

　　解析：

　　1.D，前一句提到有關(guān)蝶王的謎已經(jīng)解開。本句詳細闡述這個謎底是什么，即美國科學家發(fā)現(xiàn)蝶王根據(jù)太陽設(shè)定自己的生物鐘去旅行

　　2.F，后一句提到每年秋天成千只蝴蝶長途跋涉到墨西哥山脈過冬。因此本句是個銜接句，說明在寒冷的天氣這些蝴蝶生活的時間不會很長。

　　3.B，前一句提到?jīng)]有一只蝴蝶可以完成全程旅行。本句更進一步說明蝴蝶的旅行途中發(fā)生的事情。

　　4.E，前一句說過去的研究表明有些昆蟲利用太陽指引方向。后一句詳細介紹有關(guān)蝴蝶如何利用太陽指引方向。所以本句是轉(zhuǎn)折句，表明老師們不確定蝴蝶是如何利用太陽指引方向的。

　　5.A，本句進一步解釋前一句話的內(nèi)容。前一句話意為“蝴蝶在24小時都有燈光的情況下，會直接飛向太陽”。本句意為“這說明這種情況下蝴蝶沒有時間概念”。That is,意為“也就是說”。

2017年職稱英語考試復(fù)習重點句型匯總

2017年職稱英語考試題型分析

2017年職稱英語考試復(fù)習指導(dǎo)

2017年職稱英語考試備考經(jīng)驗匯總

　　環(huán)球網(wǎng)校友情提示：2017年職稱英語考試即將開始報名，本文整理“2017年職稱英語考試理工類補全短文練習4”供考生參考練習。如果您在此過程中遇到任何疑問，請登錄環(huán)球網(wǎng)校職稱英語頻道及職稱英語論壇，我們隨時與廣大考生朋友們一起交流!

　　【摘要】2017年職稱英語考試備考進行中，網(wǎng)校為幫助大家備考特分享了“2017年職稱英語考試理工類補全短文練習4”，希望備考2017年職稱英語考試的考生都能順利通關(guān)，更多資料敬請關(guān)注環(huán)球職稱英語考試頻道！

　　相關(guān)推薦：2017年職稱英語考試理工類完形填空專練匯總

　　閱讀下面的短文，文章中有5處空白，文章后面有6組文字，請根據(jù)文章的內(nèi)容選擇5組文字，將其分別放回文章原有位置，以恢復(fù)文章原貌。

　　The influence of television

　　About six years ago I was eating lunch in a restaurant in New York city when a woman and a young boy sat down at the next table.__________(46) At one point the woman asked:"So,how have you been?"And the boy?who could not have been more than seven or eight years old?replied."Frankly,I've been feeling a little depressed latterly."

　　This incident stuck in my mind deeply.___________ (47)As far as I can remember.My friends and I didn't find out we were"depressed"until we were in high school.

　　The evidence of a change in children has increased steadily in recent years._________(48)Children speak more like adults,dress more like adults and behave more like adults than they used to.

　　Whether this is good or bad is difficult to say,but it certainly is different.Childhood as it once was no longer exists,why?

　　Human development is based not only on innate biological states,but also on patterns of access to social knowledge.Movement from on social tote (生搬硬套) to another usually involves learning the secrets of the new status._____________(49)Traditionally,we tell sixth grades things we keep hidden from fifth graders.

　　In the last 30 years,however,a secret??revelation machine has been installed in 98 percent of the American homes._____________ (50)Television passes information,and indiscriminately,to all viewers alike,be they children or adults.Unable to resist the temptation,many children turn attention from printed texts to the less challenging,more vivid moving pictures.

　　Actually,communication through print allows for great deal of control over the social information to which children have access.Children must read simple books before thy can read complex materials.

　　A.it conformed my growing belief that children are changing.

　　B.Children nowadays are influenced by television.

　　C.I couldn't help overhearing parts of their conversation.

　　D.Children have always bee taught adult secrets,but slowly and in stages.

　　E.Children don't seem childlike anymore.

　　F.It is called television.

　　參考答案： CAEDF

2017年職稱英語考試復(fù)習重點句型匯總

2017年職稱英語考試題型分析

2017年職稱英語考試復(fù)習指導(dǎo)

2017年職稱英語考試備考經(jīng)驗匯總

　　環(huán)球網(wǎng)校友情提示：2017年職稱英語考試即將開始報名，本文整理“2017年職稱英語考試理工類補全短文練習4”供考生參考練習。如果您在此過程中遇到任何疑問，請登錄環(huán)球網(wǎng)校職稱英語頻道及職稱英語論壇，我們隨時與廣大考生朋友們一起交流!