Population experts tell us that by the year 2025, the population in cities in developing nations will increase to five times its present size.()
题目
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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第1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答案：D解析：参见第五段。作者特别提到由于鲸鱼的数量巨大，它们很可能没有足够的食物。因此，过量饮食是不可能的。由于人们还没有真正弄清楚鲸鱼的死因，那么，任何其他的原因都是可能的。 -
第2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答案：B解析：由最后一段可知。今年在旧金山海湾地区看到了65只鲸，去年是17只。所以今年大约是去年的三倍。 -
第3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？
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第4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答案：B解析：由倒数第三段可知。 -
第5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答案：C解析：由倒数第二段可知。 -
第6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 shortage
B．某环境污染物超标 Some environmental pollutants exceed the standard
C．生态环境恶化 Ecological environment deterioration
D．人口过剩 Over-population
人类的可持续