현대고 2023 고1 1학기 중간 · 영어

As much as we can learn by examining fossils, it is important to remember that they seldom tell the entire story. Things only fossilize under certain sets of conditions. Modern insect communities are highly diverse in tropical forests, but the recent fossil record captures little of that diversity. Many creatures are consumed entirely or decompose rapidly when they die, so there may be no fossil record at all for important groups. It's a bit similar to a family photo album. Maybe when you were born your parents took lots of pictures, but over the years they took photographs occasionally, and sometimes they got busy and forgot to take pictures at all. Very few of us have a complete photo record of our life. Fossils are just like that. Sometimes you get very clear pictures of the past, while at other times there are big gaps, and you need to notice what they are. decompose

Recent research suggests that evolving humans' relationship with dogs changed the structure of both species' brains. One of the various physical changes caused by domestication is a reduction in the size of the brain: 16 percent for horses, 34 percent for pigs, and 10 to 30 percent for dogs. This is because once humans started to take care of these animals, they no longer needed various brain functions in order to survive. Animals who were fed and protected by humans did not need many of the skills required by their wild ancestors and lost the parts of the brain related to those capacities. A similar process occurred for humans, who seem to have been domesticated by wolves. About 10,000 years ago, when the role of dogs was firmly established in most human societies, the human brain also shrank by about 10 percent.

Motivation may come from several sources. It may be the respect I give every student, the daily greeting I give at my classroom door, the undivided attention when I listen to a student, a pat on the shoulder whether the job was done well or not, an accepting smile, or simply "I love you" when it is most needed. It may simply be asking how things are at home. For one student considering dropping out of school, it was a note from me after one of his frequent absences saying that he made my day when I saw him in school. He came to me with the note with tears in his eyes and thanked me. He will graduate this year. Whatever technique is used, the students must know that you care about them. But the concern must be genuine — the students can't be fooled.