Barron's TOEFL C-1

A deadly cobra has escaped from its pen at the Bronx zoo. The staff believe it to be confined to the reptile house, but they have informed the public out of an abundance of caution.

clarify
It turns out your belly button is like a rainforest, at least in terms of biodiversity. Scientists hope to clarify what the thousands of microbes that our navels harbor are doing, and why they're there in the first place.

One of the perks of living in Europe is the generous vacation schedule. But austerity moves in Spain could mean the loss of a celebrated tradition: the four-day weekend.

Taekwondo has no standard system for collecting or classifying statistics that go beyond the final score. Fans can argue about who has the most effective roundhouse kick, but don't have any numbers to back up their claims.

classify
Despite its name, white chocolate doesn’t contain any cocoa liquor, so the Food and Drug Administration doesn’t even classify it as chocolate.

When it comes to stony gazes, nothing beats that of the chiton. It's eyes are made from coarse aragonite, like its shell, but it can still see objects and changes in light.

A US worker was rescued after being swept over a mile down a 27-inch sewer pipe in Raymore, Missouri. He was not totally coherent when found and was flown to a hospital to recoup.

Unless a comet can be destroyed before colliding with Earth, only those allowed into shelters will survive. But who will they be?