题目内容
【题目】An ecosystem consists of the living and nonliving things in an area ________ interact with one another.
A.that
B.where
C.who
D.what
【答案】A
【解析】句意:一个生态系统由一个区域内的可以相互作用的生物和非生物成的。根据句意可知,________ interact with one another是定语从句,修饰先行词the living and nonliving things,故排除what,what不能用于定语从句。 在该定语从句中,interact 缺少主语,因此排除B项。That 既可以代指人,也可以代指物,who只能代指人,根据中的先行词是the living and nonliving things 是既有人又有物,因此只能选择A项。
【题目】选词填空
A. restore B. recall C. processing D. previously |
As infants, we can recognize our mothers within hours of birth. In fact, we can recognize the of our mother’s face well before we can recognize her body shape. It's how the brain can carry out such a function at such a young age, especially since we don’t learn to walk and talk until we are over a year old. By the time we are adults, we have the ability to distinguish around 100,000 faces. How can we remember so many faces when many of us find it difficult to such a simple thing as a phone number? The exact process is not yet fully understood, but research around the world has begun to define the specific areas of the brain and processes for facial recognition.
Researchers at the Massachusetts Institute of Technology believe that they have succeeded in a specific area of the brain called the fusiform face area (FFA), which is used only for facial recognition. This means that recognition of familiar objects such as our clothes or cars, is from in the brain. Researchers also have found that the brain needs to see the whole face for recognition to take place. It had been thought that we only needed to see certain facial features. Meanwhile, research at University College London has found that facial recognition is not a single process, but involves three steps. The first step appears to be an analysis of the physical features of a person’s face, which is similar to how we scan the bar codes of our groceries. In the next step, the brain decides whether the face we are looking at is already known or unknown to us. And finally, the brain furnishes the information we have collected about the person whose face we are looking at. This complex is done in a split second so that we can behave quickly when reacting to certain situations.