The sex ratio at birth______.
A. rests to some extent with the distance to equator
B. is mainly determined by abortion or infanticide
C. correlates only with cultural or economic factors
D. related to every single cultural or political variable
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The author asserts that the correlation of sex ratio and latitude is ______.
A. affected by variations in socioeconomic status
B. invulnerable to abortion or killing of baby girls
C. vulnerable to sex selection by parents before birth
D. to be verified with evidence of more years of data
The author feels nervous when making big decisions because he______.
A. is born indecisive and irresolute
B. dislikes making definite decisions
C. lacks enough intelligence to do so
D. attempts to avoid the ensuing regrets
The proper title for the text should be ______.
A. Sex Ratio Seen to Vary by Latitude
B. Climate factors Affecting Sex Ratio
C. Statistics about Human Populations
D. Variations in Socioeconomic Status
According to the text, the removal of duty would lead to______.
A. the collapse of human civilization
B. the creation of a strong work ethic
C. the fulfillment of one"s commitment
D. an immense improvement of society
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