For millions of years, the changes in Earth’s climate have been driven by forces of nature. But for the last century and a half, Earth’s average temperature has been rising (47) than any time in the past ten thou- sand years. The (48) in science is that much of that change has been driven by us.
The climate is not what it used to be. It’s not your grandfather’s climate anymore.
The (49) are everywhere: droughts in the American Southwest and Africa’s Sahara(撒哈拉), (50) seas in Louisiana and Bangladesh (孟加拉国), tropical diseases spreading north and extremes of weather from Florida to France.
There are people who still say global warming needn’t (51) us. If it’s happening at all, it’s a natural trend, not much we can do about it. But there is now hard (52) which shows that the warming is not only real. It’s (53) . It’s altering the climate’s most basic elements like rainfall and evaporation, days of sunshine and nighttime temperatures. Those changes are (54) the environments in the agricultural production, (55) wild species with extinction and putting at risk our life styles, our health, and some of our favorite cities by the sea. We’ll follow the signs and see who i f anyone is responsible. We’ll meet scientists who are (56) new climate evidence and we’ll see what we can do to help.
A. worry F. signs K) faster
B. rising G. vast L) consensus
C. troubles H) investigating M) threatening
D. quickly I) ers N) damaging
E. evidence J) accelerating O) concern