2. 外语
  3. During recent years we have heard much about "race": how this race does certain things and that race believes certain things and

During recent years we have heard much about "race": how this race does certain things and that race believes certain things and

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问题     During recent years we have heard much about "race": how this race does certain things and that race believes certain things and so on. Yet, the (1)_____ phenomenon of race consists of a few surface indications.
    We judge race usually(2)_____ the colouring of the skin: a white race, a brown race, a yellow race and a black race. But(3)_____ you were to remove the skin you could not(4)_____ anything about the race to which the individual belonged. There is(5)_____ in physical structure, the brain or the internal organs to(6)_____ a difference.
    There are four types of blood.(7)_____ types are found in every race, and no type is distinct to any race. Human brains are the(8)_____. No scientists could examine a brain and tell you the race to which the individual belonged. Brains will (9)_____ in size, but this occurs within every race.(10)_____ does size have anything to do with intelligence. The largest brain(11)_____ examined belonged to a person of weak(12)_____. On the other hand, some of our most distinguished people have had(13)_____ brains.
    Mental tests which are reasonably(14)_____ show no differences in intelligence between races. High and low test results both can be recorded by different members of any race.(15)_____ equal educational advantages, there will be no difference in average standings, either on account of race or geographical location.
    Individuals of every race(16)_____ civilization to go backward or forward. Training and education can change the response of a group of people, (17)_____ enable them to behave in a(n)(18)_____ way.
    The behavior and ideas of people change according to circumstances, but they can always go back or go on to something new(19)_____ is better and higher than anything(20)_____ the past.
(11)
选项 A、ever
B、then
C、never
D、once
答案D
解析 本句用了一般过去时，据此推断空格处应填入一个表示“过去”的副词，once表示“曾经”，符合上下文语义。ever表示“任何时候”，常用于否定句或疑问句；then表示“那时候”，上下文并未提到过去的具体时间。
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