Brain activity in the dogs showed that they __________ (KNOW) which objects were warmer than others. So dogs adjust their behaviour according to the thermal radiation coming from warm bodies.

They use their noses to detect temperature, when prey is nearby. Earlier it __________ (BELIEVE) that dogs' noses are cold to control their body temperature. Researchers did experiments on dogs, which had to detect the temperature of different objects.

The earliest eggs were soft, sort of like turtle or echidna eggs you might see on the beach. The harder ___________ (PROTECT) shell came later.

By the way, egg-laying is part of our evolutionary ___________ (DEVELOP). In other words, if you go back far enough in time, humans have ancestors that would have laid eggs.

Suddenly my companion asked: "Do you know who is the most _________ animal in the world?" — "A tiger," I replied without any hesitation.

"No, you are ___________. It is a bull." And he told me the following story.

Покидать вам полезных материалов и роликов для ЕГЭ по англу?

Здорова, бойцы! А сегодня что делаете?