the greenhouse effect is a naturally occurring phenomenon that keeps our planet at a comfortable temperature averaging 60.0f. since the mid-nineteenth century, however, carbon dioxide in the atmosphere has increased nearly 30% because of the increased use of fossil fuels to run cars, heat homes and power factories. without controlling, the amount of carbon-dioxide by 2100 may increase by 30%-150% and could lift the average global temperature by up to 2.5 0f in the next 50 years.
1. with the first paragraph, the author intends to ________.
a. scold people for not paying enough attention to global warming
b. draw people’s attention to global warming
c. how to search for the articles on global warming
d. point out the serous effect of global warming
2. global warming could affect human life in the following ways except ________.
a. producing more greenhouse gases
b. causing more floods
c. making winter storms more fierce
d. starting more bush fires
3. the republic of maldives ________.
a. has moved away their citizens
b. will be more likely to be destroyed by a strong typhoon than by the rising sea level
c. is mostly likely to be destroyed by the rising sea level
d. will have to move away most of their population
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