[单项选择]Forty years ago people were indifferent to the health of the ocean because ______.

[单项选择]Forty years ago people were indifferent to the health of the ocean because ______.

[单项选择]

Passage 2
Forty years ago no one was concerned about the health of the ocean, in spite of the fact that many fisheries were being over harvested, toxic wastes were being dumped in the sea, and developers were beginning to seriously disrupt coastlines. In those days, the magnitude of the problems was small, even though it was obvious that if the trends continued people would face severe economic and personal hardship in the future. People just didn’t understand, nor did they care. Unfortunately many of our concerns were realized, but the situation could have been much worse had we, and others, not taken action to inform people about the ocean and the need to protect it.
During our campaign to share the wonders of the sea and alert the public about the need to protect it, we have used every medium available——personal appearances, the printed word, and television. Now there is a new medium that is even more effective than its predecessors. Th
A. the computer is as smart as human beings
B. the computer is friends with human beings
C. human beings can interact with the computer and do what they want at their will
D. human beings have not used the computer to its fullest advantage

[单项选择]The United Nations was ______ forty years ago and held a special conference in November 1985 to celebrate.
A. established
B. set
C. completed
D. settled

[单项选择]The first forty years of life give us the text; the next thirty supply the ______.
A. abridgement
B. bibliography
C. commentary
D. epitaph
E. title

[单项选择]Forty people were severely ______ in the crash of a passenger plane.
A. damaged
B. spoiled
C. injured
D. wounded

[单项选择]Thousands of years ago people were forced to leave their homeland because ______.
A. the earth was in an ice age
B. they found their homeland getting colder
C. huge sheets of ice were spreading over the land
D. they had to stay near the animals they hunted for food

[单项选择]He was about forty years old,______, industrious, and made a living from the little farm which is now overgrown with weeds.
A. frugal
B. careful
C. economic
D. thrift