未知题型 一本有关智商遗传率的书做了下列三个陈述。请判断作者关于对H2和h2的各个陈述的正确性，并说明你对H2和h2的理解。 (1)“令人感兴趣的是……‘有怎样的可遗传性?’。(0．01)与(0．99)这两种答案在理论上与实际应用上具有完全不同的含义。”(关于H2的陈述。) (2)“根据经验，在讨论教育时，H2通常是更为相关的参数；而讨论优生学和劣生学时，h2则通常是被关注的焦点。” (3)“但是遗传能力的不同是否来自于基因的差异……这个问题与评估雇佣过程中的歧视情况无关，长远来看，而是可能与决定通过什么方式来改变这种状况有关。”

单项选择题 The Threat to Kiribati The people of Kiribati are afraid that one day in the not-too-distant future, their country will disappear from the face of the earth - literally. Several times this year, the Pacific island nation has been flooded by a sudden high tide. These tides, which swept across the island and destroyed houses, came when there was neither wind nor rain. 'This never happened before,' say the older citizens of Kiribati.What is causing these mysterious high tides? The answer may well be global warming. When fuels like oil and coal are being burned, pollutants (污染物) are released; these pollutants trap heat in the earth's atmosphere. Warmer temperatures cause water to expand and also create more water by melting glaciers (冰川)ll) and polar (极地的) ice caps.If the trend continues, scientists say, many countries will suffer. Bangladesh, for example, might lose one-fifth of its land. The coral (珊瑚) island nations of the Pacific, like Kiribati and the Marshall Islands, however, would face an even worse fate - they would be swallowed by the sea. The loss of these coral islands would be everyone's loss. Coral formations are home to more species than any other place on earth.The people of these nations feel frustrated. The sea, on which their economies have always been based, is suddenly threatening their existence. They don't have the money for expensive technological solutions like seawalls. And they have no control over the pollutants, which are being released mainly by activities in large industrialized countries. All they can do is to hope that industrialized countries will take steps to reduce pollution. 第 16 题 The people of Kiribati worry that one day their country will be taken away by a sudden high tide.A．RightB．WrongC．Not mentioned

未知题型 下表显示了在一个果蝇群体中刚毛数量的分布情况： 计算平均值、方差以及标准差。