Have you ever been to Shanghai________？

A．a(chǎn) month ago

B．yesterday

C．a(chǎn)go

D．before

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“The world has never been a better place to live in” says science writer Matt Ridley, “and it will keep on getting better.” Read on to see how Ridley makes his case. Right or wrong? You decide.

Compared with 50 years ago, when I was just four years old, people now make nearly three times as much money, eat one third more food and expect to live one third longer. In fact, it’s hard to find any areas of the world that’s worse off now than it was then, even though the world population has more than doubled over that period.

One reason we are richer, healthier, taller, cleverer, longer-lived and freer than ever before is that the four most basic human needs—food, clothing, fuel and shelter—have grown much cheaper. Take one example: In 1800, a candle providing one hour’s light cost six hours’ work. In the 1880s, the same light from a lamp took 15 minutes’ work to pay for. In 1950, it was eight seconds. Today, it’s half a second. In these terms, we are 43,200 times better off than in1800.

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Although the world population is growing, the rate (率) of increase has been falling for 50 years. Across the world, national birth rates are lower now than in 1960, and in the less developed world, the birth rate has almost halved. According to a research report from the United Nations, population will start falling once it reaches 9.2 billion in 2075. After all, there are already seven billion people on earth, and they are eating better and better.

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The more we develop, the more we can develop. The more we invent, the more inventions become possible. For 200 years, pessimists (people who believe that terrible things will happen in future) have had all the headlines—even though optimists have far more often been right. There are some reasons for pessimists. No charity (慈善機(jī)構(gòu)) ever raised money by saying things are getting better. No journalist ever got the front page writing a story about how terrible things won’t happen. Don’t be a pessimist—dare to be an optimist!

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