is taken. They used electronic ways to track the movement of the powerful fish from the Gulf of Mexico
to the Mediterranean, and report today in the journal Nature that meals of sushi and sandwiches with tuna
worldwide are more dangerous than anyone has imagined.
The bluefin tuna can live for 30 years, grow to three metres in length and weigh as much as 700kg. A
good one can fetch as much as £ 52,000 in the Tokyo fish markets."In my lifetime, we"ve brought this
big fish to the doorstep of death in the western Atlantic Ocean," said Barbara Block of Stanford University
in California."The electronic way of tracks provides the best scientific information we"ve ever had to
manage these tuna and we must, as an international community, start to act actively to make sure of the
future of this fish."
Scientists have repeatedly said that the harvest of the seas cannot be as good as before. There are fewer
and fewer fish in around Newfoundland, North Sea and Iceland, so fishermen have pushed further offshore
in search of deep ocean fish. Tuna-in the Mediterranean and Japan-have been under increasing pressure for
years. The International Commission on the Conservation of Atlantic Tuna has tried to manage the fish since
1969.There are two populations: a western one that has dropped by 80% in the past 30 years, and a larger,
eastern population. Although catches are controlled by 3,000 tons a year in the western fishery, and 32,000
in the east, no one knew whether the limits worked.
So Professor Block and her team placed tracks on hundreds of the fish and tracked them to depths of
more than 900 metres and on journeys of thousands of miles, measuring the movement, body and water
temperatures. "There are two ways to save the Atlantic bluefin tuna-protect them in their production grounds
and in their feeding grounds," Prof. Block said. "This will need immediate action in both the central Atlantic,
to reduce the loss of the big fish while hunting, and in the Gulf of Mexico and Mediterranean, where tuna
produce as separate populations."
B. in the Pacific
C. in the Gulf of Mexico
D. in the Mediterranean
B. The number of the bluefin tuna in the sea is getting smaller and smaller.
C. Scientists are worried about the future of the tuna.
D. Scientists think that the harvest of the seas will remain good.
B. call for action to save the bluefin tuna
C. warn people not to eat tuna sandwiches anymore
D. help scientists to find a new way to save the bluefin tuna
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
heart. 1 . Whether it is a structured exercise program or just part of your daily routine, all exercise adds
up to having a healthier heart. Here are some tips for exercise success.
☆ Choose activities that are fun and add variety. Develop several activities that you can enjoy. 2
☆ Wear comfortable, properly fitted shoes and comfortable, loose-fitting clothing appropriate for the
weather and the activity.
☆ Find a convenient time and place to do activities. 3 . If you miss an exercise opportunity, work
activity into your day another way.
☆ Use music to keep yourself entertained.
☆ 4 Decide what kind of support you need. Do you want them to remind you to exercise? Exercise
with you regularly or occasionally? Be understanding when you get up early to exercise?Spend time with the
children while you exercise? Try not to ask you to change your exercise routine? Share your activity time
with others. Ask your family members, friends or co-workers for help.
☆ Don"t overdo it, especially at first. You can slowly increase the time and intensity (强度) of your
activities as you become more fit. 5
☆ Keep a record of your activities. Reward yourself at times. Nothing will inspire you more than success!
B. They all cause you to feel warm and breathe heavily without being out of breath.
C. Be an active role model for your children.
D. That way, exercise will never seem boring.
E. If you are overweight or have a high risk of heart disease, see your doctor for medical advice
before exercising.
F. Surround yourself with supportive people.
G. Gradually, work up to exercising on most days of the week for 30-60 minutes.
Ever since news of widespread food recalls caused by a carcinogenic dye (颜料) broke, there has been
confusion over possible links to the country of the same name, but Sudan officials say there is no connection
whatever.
Sudan 1 is a red industrial dye that has been found in some chilli powder, but was banned in food products
across the European Union (EU) in July 2003. Since the ban was put in place, EU officials have been striving
to remove some food products from the shelves. So far 580 products have been recalled. Last week Sudan"s
Embassy in the United Kingdom asked the Food Standards Agency (FSA) for clarification of the origin of the
dye"s name.
Omaima Mahmoud Al Sharief, a press official at Sudan"s Embassy in China, explained the purpose of the
inquiry was to clear up any misunderstanding over links between the country and the poisonous dye.
"We want to keep an eye on every detail and avoid any misunderstanding there," she said."Our embassy
to Britain asked them how the dye got that name and whether the dye had something to do with our country.
But they told us there was no relationship."
The FSA, an independent food security watchdog in Britain, received a letter from the Sudanese embassy
last week.
"They asked us why the dye is named Sudan, however, we also do not know how it got the name," she
said. "People found the dye in 1883 and gave it the name. Nobody knows the reason, and we cannot give any
explanation before we find out."
Sudan dyes, which include Sudan 1 to 4, are red dyes used for colouring solvents (溶剂), oils, waxes,
petrol, and shoe and floor polishes. They are classified as carcinogens by the International Agency for
Research on Cancer.
B. Having side effect.
C. Containing poison.
D. Poisonous.
B. The dye has something to do with the country named Sudan.
C. Nobody is sure of the origin of the name.
D. Many foods produced in Sudan contain the dye.
B. Sudan 1 is often used to be added to the food
C. people didn"t realize the danger of Sudan 1 until 2003
D. many food shops will be closed down
B. No Sudan 1 dye links to the country
C. How Sudan 1 dye got its name?
D. Pay attention to the food safety
More than that, though, he has also interfered (干涉) with the invisible bonds between the living things in
the forests. There are many examples of this kind of destruction. The harmfulness of man"s interference
can be seen in what happened many years ago in the forest of the Kaibab plateau (凯亚巴布高原) of
northern Arizona. Man tried to improve on the natural web of forest life and destroyed it instead.
The Kaibab had a storybook forest of large sized pine, Douglas fir, white fir, blue and Engelmann spruce.
In 1882 a visitor noted,"We, who... have wandered through its forests and parks, have come to regard it as
the most enchanting region it has ever been our privilege (特权) to visit." This was also the living place of the
Rocky Mountain mule deer. Indians hunted there every autumn to gather meat and skins. The forest also had
mountain lions, timber wolves and bobcats that kept the deer from multiplying too rapidly.
Then, in 1906, President Theodore Roosevelt made the Kaibab a national game preserve. Deer hunting was
forbidden. Government hunters started killing off the deer"s enemies. In 25 years" time, 6,250 mountain lions,
wolves and bobcats were killed. Before the program, there were about 4,000 deer in the Kaibab, by 1924,
there were about 100,000.
The deer ate every leaf and twig they could reach. But there was not nearly enough food. Hunting of deer
was permitted again. This caused a slight decrease in the deer herd (鹿群),but a far greater loss resulted from
starvation (饥饿) and disease. Some 60 percent of the deer herd died in two winters. By 1930 the herd had
dropped to 20,000 animals. By 1942 it was down to 8,000.
B. interfering with natural cycle of forest life
C. forest fires caused by man"s carelessness
D. cutting the trees for building materials
B. an animal
C. a mountain
D. a game
B. 6
C. 18
D. 12
B. the organized kill
C. the shortage of food
D. the poor management
for themselves and their family significantly more than men, research has found. The study, by independent
research company Datamonitor, says that for this reason health sites should make greater efforts to appeal
to women by covering their health concerns.
The researchers, who quizzed 4,531 adults across France, Germany, Italy, Spain, the UK and the US,
found that websites have become just as important as some off-line sources of health information. Fifty-seven
percent of those who looked for health information in the past 12 months consulted Internet sources.
Report author Yvonne MacPherson said,"A distinct advantage of the Internet as a source of health
information is that information is easily accessible and can be read in private and at the leisure of the Internet
user." "Good health sites are not meant to replace interaction with a physician. Rather, they help patients
prepare for appointments and take more responsibility for their health." He added.
Currently, 32-34% of adults aged 18 to 54 used the Internet to search for health information. This number
decreases to 27% in the 55 to 64 age group, and further to 14% in the 65 and over age group. Young Internet
users often conduct online health research on behalf of older family members who do not use the Internet.
However, Datamonitor says that the audience for health information online will grow naturally as the
population ages, and more and more people grow up with the net. It recommends that website operators
focus their efforts on building a good long-term relationship with their existing consumers, rather than on
attempting to attract non-Internet users.
A. The popularity of health websites.
B. The importance of health advice.
C. The advantage of the Internet sources.
D. The increase of people"s health concerns.
B. convenient
C. accurate
D. abundant
B. A good health site should be able to replace interaction with a doctor.
C. The old tend to make less use of the Internet for health information.
D. The young may be the potential audience of health information online.
abstract art. But the objects are the contents of the stomach of a sea turtle that lost its battle with plastic
pollution.
Environmentalists examined the stomach of the turtle found off the coast of Argentina. What they found
is the symptom of the increasing threat to sea turtles from a human addiction to plastic.
Sea turtles often mistake plastic items for jellyfish or other food. Ingesting (摄取) ocean pollution can
cause a digestive blockage and internal cuts. The result can be dangerous, followed by death.
Humans produce 260 million tons of plastic a year. When those products are pulled into the sea"s currents,
the plastics are just broken into smaller pieces which are consumed by marine life at the bottom of the food
chain. An examination of a green turtle found off Florida discovered that, over the course of a month, the
animal"s faeces (粪便) had contained 74 foreign objects, including "four types of balloons, different types of
hard plastic, a piece of carpet-like material and two 2-4 mm tar balls."
"The oceans have become on giant refuse bin for all manner of plastics. All sea turtle species may be
seriously harmed," according to the biologists Colette Wabnitz, from the University of British Columbia."The
symptom of this growing crisis can be seen inside and on sea turtles as well as their oceanic and terrestrial
habitats. It is urgently necessary to directly confront the source of plastic pollution, redesign packaging and
rethink the very idea of "throwaway culture"."
Almost all marine species, from plankton to whales, have ingested plastic. But, even in small quantities,
plastic can kill sea turtles, the biologists said.
Fifty out of 92 turtles found dead, stranded on the shorelines of Rio Grande do Sul state in Brazil, had
ingested a"considerable amount of man-made debris".
B. Why plastic is dangerous to the sea turtle.
C. Sea turtles suffering from plastic pollution.
D. Protecting the sea turtle from being polluted.
B. positive
C. comedic
D. ironic
B. a kind of fish
C. pieces of rubbish
D. pieces of cloth
B. some tips on how to make sea turtles avoid plastic
C. how to prevent plastic pollution
D. the reason why we should protect the sea turtle
- 1Many people don’t think that the number 13 is a lucky number
- 2一个良好新集体建立的动力与方向是A.共同的奋斗目标B.各成员团结友爱和互帮互助 C.严明的纪律D.各成员担负相应的责任
- 3在一绝缘、粗糙且足够长的水平管道中有一带电量为q、质量为m的带电球体,管道半径略大于球体半径.整个管道处于磁感应强度为B
- 4空气压缩机在一次压缩过程中,活塞对气缸中的空气做功为2 ×105J ,空气的内能增加了1.5×105 J ,则空气 __
- 5默写古诗文名句,并在括号内的横线上填写相应的作家、作品。(10分)小题1:自三峡七百里中,两岸连山,
- 6绘制下列四幅图幅大小相等的地图,所选用的比例尺最小的是[ ]A.世界政区图B.中国政区图C.学校平面图D.泰州政
- 7盐地碱蓬是一种典型的抗逆性强的真盐生植物,具有众多的抗盐基因。人们希望通过基因工程的手段将这些抗盐基因导入到非盐生植物的
- 8 农民工进城打工已经成了中国经济发展的一个普遍现象,而由此引发的社会问题是广泛的,其中农村大量的留守儿童如何安置已经成
- 9民族区域自治是我国的一项基本国策和基本政治制度。我国实行民族区域自治最基本的前提是A维护民族平等 B.维护民族
- 10Is the ‘Go to College’ Message Overdone? Even in a weak job
- 1任务型阅读(共5小题,每小题2分,共10分)Vince, Jason, Rosa, Danny和Donna各自打算参加学
- 2现代文阅读(每小题3分,共9分)太空行走在地面上,行走是指用双腿克服地球引力,轮流迈步,从一处地面走向另一处地面。但在太
- 3右表为家庭中一些常见物质的PH.有些昆虫如蜂、蚂蚁等叮咬人时,会向人体内摄入一种叫蚁酸(有酸的性质)的物质,使皮肤红肿、
- 4仿照下面句子,以“父亲”作开头再写三个句子。示例:父亲是疲惫中的一杯龙井,当你软弱无力时,只需一口就使你神清气爽。仿写:
- 5下列物质的分类合理的是( )A.氧化物:CO2、NO、SO2、H2OB.碱: Cu(OH)2、Ba(OH)2、烧碱、纯
- 6—Are there any fish in the lake now? —No, _____ any water in
- 7如果你生活在张骞通西域之前,你不可能吃到的食物是[ ]A.大米B.粟C.葡萄D.猪肉
- 8 _______ new decision has been made that those who cheat in
- 9下列说法中错误的是A.磺化、硝化、风化、钝化都是化学变化B.蒸馏、干馏、常压分馏、减压分馏、都是物理变化C.甘油不是油,
- 10英国革命和法国大革命“不仅反映了它们本身发生的地区即英法两国的要求,而且在更大得多的程度上反映了当时整个世界的要求”。这