正确答案:

题目：海洋是生产力和生物量最大的生态系统类型。( )

解析：×

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举一反三的答案和解析：

[单选题]心尖搏动的强弱及范围变化的生理条件是( )

胸壁厚薄或肋间隙宽窄

[单选题]解决我国民族问题的基本原则是( )

维护祖国统一，坚持平等、团结，促进各民族共同繁荣

解析：B【解析】“A”是处理我国民族问题的基本政策；“C”、“D”不属于解决民族问题的基本原则。解决我国民族问题的基本原则是民族平等、民族团结和各民族共同繁荣，故选“B”。

[单选题]分泌生长素释放抑制激素的部位是( )

下丘脑促垂体区

[单选题]Passage TwoAmerica put more people in prison in the 1990s than in any decade in its history. That started a debate over the wisdom of spending billions of dollars to keep nearly 2 million people locked up. According to statistics, the United States ends 1999 with 1983084 men and women in prisons. That shows an increase of nearly 840,000 prisoners during the 1990s and makes the United States the country with the highest prisoner population in the world. With the cost of housing a prisoner at about $20,000 a year the cost in 1999 for keeping all these prisoners behind bars is about $39 billion.

billions of dollars has been spent on prisoners

解析：

36．答案为C。此处为因果关系，根据第一段第一句，America put more people in prison in the l990s than in any decade in its history作出该项选择。

[单选题]

come

解析：

30．答案为D  根据上下文，come into表示“进入意识”，或译为“……答案将开始出现”。