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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