We can infer from the text that Owens was treated unfairly in the US at that time because
A. he was not of the right race
B. he was the son of a poor farmer
C. he didn't shake hands with Hitler
D. he didn't talk to the US president on the phone
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Scientists counted the number of stars ______.
A. to illustrate the impact of light pollution
B. to compare air quality in different areas
C. to see how the sky has changed with time
D. to arouse public interest in space
The school board listened quietly as John read the demands that his followers_____for.
A. demonstrate
B. demonstrated
C. be demonstrating
D. had been demonstrating
What is the attitude of the author towards the function of sociologists in the great changes?
A. Critical.
B. Positive.
C. Negative.
D. Indifferent.
It can be inferred that underlying the two changes is the change of_____.
A. the instrument of production
B. the size of the society
C. the social structure
D. the economic market