Intelligence
Are some people born clever, and others born stupid? Or is intelligence ___1___ (develop) by our environment and our experience?___2___ (strange) enough, the answer to these questions is yes. To some extent our intelligence is ___3___ (give) us at birth, and no amount of special ___4___ （educate）can make a genius out of a child born with low intelligence. On the other hand, a child who lives in a boring environment will develop his intelligence less than one who lives in rich and varied ___5___ (surround). Thus, the limits of a person’s intelligence are fixed at birth, whether or not he ___6___ (reach) those limits will depend on his environment. This view, ___7___ (hold) by most experts now, can be supported in a number of ___8___ (way). As is easy to show that intelligence is to some extent something we are born with. The__9__(close) the blood relationship between two people is, the closer they are ___10___ (like) to be in intelligence.
9___.
【正确答案】：closer
【题目解析】：此空格和50题所在句子是一个完整的句子，是以形容词比较级开头构成的倒装句，翻译是“越…就越…”，根据后半句的closer， 所以49答案是closer
