题目

42．（10分）一个正常的女人与一个并指(Bb)的男人结婚，他们生了一个白化病且手指正常的孩子。求： (1)其再生一个孩子出现只并指的可能性是______。 (2)只患白化病的可能性是__________。 (3)生一个既患白化病又患并指的男孩的概率是____。 (4)后代只患一种病的可能性是__________。 (5)后代中患病的可能性是__________。National Forecast LONDON —This Evening and Tonight: Rain, locally heavy across northwest Scotland. Mostly cloudy but dry in other northern and western areas.  Dry with clear spells(持续时间)in more central and eastern parts, but some low cloud and fog will develop. Generally mild with light winds. Saturday: Cloud and rain over western Scotland at the beginning will gradually push down over N. Ireland and northwest England. Largely dry, warm with sunny spells elsewhere, once early fog and low cloud clears. http://www.times.online.co.uk/tol/news/weather/ The Nation's Weather Fri, Aug 24, NEW YORK—Heavy rain was forecast throughout Friday in parts of the Midwest. The heaviest rainfall was over northern Illinois, with more than 4 inches possible around Chicago. Wet weather was also expected in the Plains as the same storm system tracks through the region. Periods of heavy rain were also forecast for the Northeast as the remnant(剩余部分)of tropical storm Erin moves into the Canadian Maritimes. Hot weather was expected to continue in the South and West. http://www.underground.com Death toll rises to 36 in China typhoon Wed, Aug 22, BEIJING— At least 36 people were killed by Typhoon Sepat in four provinces in eastern and central China in widespread destruction that also forced the evacuation (撤退)of l.37 million people. More than 60,000 homes in the provinces of Fujian, Jiangxi, Zhejiang and Hunan also were destroyed or damaged, Xinhua News Agency said. Total economic losses in the provinces have reached $ 663 million. Fujian was the worst-hit province, with 18 people killed, Xinhua said. Earlier, the storm, named after a Malaysian fish, killed at least one person in Taiwan, and left three dead in the Philippines.http://news.yahoo.com/s/ap小题1:On August 25, in N. Ireland and northwest England, there will be _____.A．low cloud and fogB．typhoon and floodC．cloud and rainD．sunshine and mild wind小题2:What was the weather like in the south and west of the USA on Thursday?A．It was hot.B．It was rainy.C．It was foggy.D．It was warm.小题3:The storm named Sepat _____. A．caused one death in the PhilippinesB．killed 18 people in TaiwanC．destroyed about 60,000 homes in FujianD．caused great economic losses小题4:The name of Typhoon Sepat comes from  _____. A．a tropical stormB．a Malaysian fishC．a placeD．a person