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Population experts tell us that by the year 2025, the population in cities in developing nations will increase to five times its present size.()
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更多 “ Population experts tell us that by the year 2025, the population in cities in developing nations will increase to five times its present size.() ” 相关考题
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Could you ____ me how to ________ this word in English? (A. tell, speakB. speak, sayC. tell, sayD. say, speak
考题
Today we know more about ______. We’re better at preventing illness.A: medicineB: pollutionC: environmentD: population
考题
下列关于总体与样本的总体叙述正确的有（）。
A.总体（population）是根据研究目的确定的同质观察单位的全体
B.总体（population）是同质的所有观察单位某种变量值的集合
C.观察单位亦称个体，是统计研究中最基本的单位
D.有的总体是在确定的同质基础上明确了一定时间、一定空间的有限个观察单位，称为有限总体
E.有时总体是抽象的，观察单位数是无限的，该总体称无限总体
考题
Every year gray whales migrate from the Bering Sea in Alaska to the Baja Peninsula in Mexico.
Eleven gray whales have died in the San Francisco Bay in the last three weeks．No one knows why the whales are dying.
Last year 270 whales died along the whales'migration route．Many people think starvation is the cause．This year the dead whales seem to have more blubber(fat)on them.
Twenty years ago,the gray whale was listed as an endangered species.
Some scientists think that the larger number of whales makes it hard to find enough food．More whales create more pressure on the food supply,a supply that some scientists say may have dwindled as a result of the warm waters of El Nino.
Most of the whales have been dead for many days before they are found and studied．This makes it hard to find the reason for death.
65 whales have been seen in the San Francisco Bay Area this year compared to 17 last year．The whales could be dying from many diseases,but it may be over-population．
Which of the following is NOT a possible reason for whales dying?A.Pneumoni
B.Brain infectio
C.Over-populatio
D.Over-eatin
考题
Every year gray whales migrate from the Bering Sea in Alaska to the Baja Peninsula in Mexico.
Eleven gray whales have died in the San Francisco Bay in the last three weeks．No one knows why the whales are dying.
Last year 270 whales died along the whales'migration route．Many people think starvation is the cause．This year the dead whales seem to have more blubber(fat)on them.
Twenty years ago,the gray whale was listed as an endangered species.
Some scientists think that the larger number of whales makes it hard to find enough food．More whales create more pressure on the food supply,a supply that some scientists say may have dwindled as a result of the warm waters of El Nino.
Most of the whales have been dead for many days before they are found and studied．This makes it hard to find the reason for death.
65 whales have been seen in the San Francisco Bay Area this year compared to 17 last year．The whales could be dying from many diseases,but it may be over-population．
Why might the increasing number of whales cause problems with their health?A.There's not enough room for them in Alask
B.There may not be enough food for them in Alask
C.They get pushed ashor
D.There are more whales to spread diseas
考题
Every year gray whales migrate from the Bering Sea in Alaska to the Baja Peninsula in Mexico.
Eleven gray whales have died in the San Francisco Bay in the last three weeks．No one knows why the whales are dying.
Last year 270 whales died along the whales'migration route．Many people think starvation is the cause．This year the dead whales seem to have more blubber(fat)on them.
Twenty years ago,the gray whale was listed as an endangered species.
Some scientists think that the larger number of whales makes it hard to find enough food．More whales create more pressure on the food supply,a supply that some scientists say may have dwindled as a result of the warm waters of El Nino.
Most of the whales have been dead for many days before they are found and studied．This makes it hard to find the reason for death.
65 whales have been seen in the San Francisco Bay Area this year compared to 17 last year．The whales could be dying from many diseases,but it may be over-population．
About how many more whales have been sighted in the San Francisco Bay this year compared to last year?A.Twice as man
B.Three times as man
C.Half as man
D.About the sam
考题
Every year gray whales migrate from the Bering Sea in Alaska to the Baja Peninsula in Mexico.
Eleven gray whales have died in the San Francisco Bay in the last three weeks．No one knows why the whales are dying.
Last year 270 whales died along the whales'migration route．Many people think starvation is the cause．This year the dead whales seem to have more blubber(fat)on them.
Twenty years ago,the gray whale was listed as an endangered species.
Some scientists think that the larger number of whales makes it hard to find enough food．More whales create more pressure on the food supply,a supply that some scientists say may have dwindled as a result of the warm waters of El Nino.
Most of the whales have been dead for many days before they are found and studied．This makes it hard to find the reason for death.
65 whales have been seen in the San Francisco Bay Area this year compared to 17 last year．The whales could be dying from many diseases,but it may be over-population．
One reason it is difficult to know why the whales are dying is that__.A.the whales travel such a long distance
B.there are more whales than there used to be
C.the whale bodies are too old to study by the time they are found
D.the whales are endangered
考题
试查找对比中国大城市（例如北、上、广、深之一）与发达国家某特大城市的城市/都市圈面积（city/urban/metropolitan area）、建成区面积（built-up area）和人口（population），计算这些城市/都市圈的建成区人口密度（density）与并网上文献中的城市/都市圈人口密度进行对比，看看有没有区别？
考题
本课程关心的环境问题类型不包括哪项（）Which types of environmental issues are out of interest to this course（）A．资源短缺 Resource shortageB．某环境污染物超标 Some environmental pollutants exceed the standardC．生态环境恶化 Ecological environment deteriorationD．人口过剩 Over-population
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