题目内容
造成46，XX男性和45，XO男性的可能原因是______
查看答案
搜索结果不匹配？点我反馈
更多问题
简答题Directions: Complete the sentences by translating into English the Chinese given in brackets. Please write your translation on Answer Sheet 2. But for the storm，______(船一定会准时到达目的地).
在家猫中，黑毛和黄毛是由一对X连锁基因控制的，且以下列方式遗传，基因B在纯合和半纯合时均为黑色，基因b在纯合和半纯合时均为黄色，两个基因的杂合体为玳瑁猫。现有4个小猫的表型是：一个黄色雌猫，一个黑色雄猫，一个黄色雄猫，一个玳瑁猫，下列何种亲本组合可产生这些猫______
案例分析题Domestic pets in Britain are often treated like a member of the family. The most (36) pets are of course cats and dogs, but then there are the (37) birds, fish and rabbits, all found in homes. Pets are thought to bring an "animal (38) " into the home. Cats make the perfect reading (39) , while dogs are widely believed to be man’s best friend. There are dozens of animal rescue (40) across Britain, and animal lovers are encouraged to go to these centers if they want to get a pet, rather than going to pet shops, which may be (41) and sell animals bred in harsh conditions.Although there is no annual (42) fee to keep pets, the cost of keeping a pet can be relatively high. Food, grooming, and (43) can mount up over the years (44) . Most primary schools also have class on pets and children are encouraged to look after them and are taught to treat them. (45) , the UK is one of Europe’ s largest markets for exotic pets. Thousands of snakes, lizards, crocodiles and other reptiles make their way to Britain every year to support the booming exotic pet business. (46) . 43（）
案例分析题In some urban centers, workaholism is so common that people do not consider it unusual. They accept the lifestyle as normal. They frequently spend many (67) hours on the job each week and often do so by choice, not by (68) .Workaholism can be a serious problem. (69) true workaholics would rather work than do anything else, they probably don’t know how to (70) ; that is, they might not (71) movies, sports, or other types of entertainment. (72) of all, they hate to sit and do nothing. This (73) to relaxation may cause health problems such as heart attacks. (74) , typical workaholics don’t pay much attention to their families. They spend (75) time with their children, and their marriages may (76) .Is workaholism always dangerous Perhaps not. Some studies show that many workaholics have great (77) and interest in life. Their work is so (78) that they are actually very happy. For most workaholics, their jobs provide them (79) a challenge; this keeps them busy and creative.Other people (80) from work at age sixty-five, but workaholics usually (81) not to quit. They are still (82) about work and life in their eighties and nineties.Why do workaholics enjoy their jobs so much There are several advantages to work. Surely it offers more than financial (83) It provides people with self confidence. Psychologists claim that work gives people an identity through participation in work, (84) they get a sense of self-satisfaction and (85) Perhaps some people are compulsive about their work, but their (86) seems to be a safe—even an advantageous—one. 82（）
微信支付 
支付宝支付