Unit 2 Section B Learning About Language（重点练）-2020-2021学年高二英语十分钟同步课堂专练（人教版2019选择性必修第一册）

十分钟同步课堂专练 Unit 2 Looking into the future Section B Learning About Language 重点练 I.阅读理解 What will man be like in the future——in 5000 or even 50,000 years from now? We can only make guesses, of course, but we can be sure that he will be different from what he is today, for man is slowly changing all the time. Let us take an obvious example. Man, even five hundred years ago, was shorter than he is today. Now, on average, men are about three inches taller. Five hundred years is relatively short period of time, so we may assume that man will continue to grow taller. Again, in the modern world we use our brains a great deal. Even so, we still make use of only about 20% of the brain’s capacity. As time goes on, however, we shall have to use our brains more and more, and eventually we shall need larger ones! This is likely to bring about a physical change to the head, in particular the forehead, will grow larger. Nowadays our eyes are in constant use. In fact, we use them so much that very oft