The result is not very important to us,

甲公司指派员工唐某从事新型灯具的研制开发，唐某于2003年3月完成了一种新型灯具的开发。甲公司对该灯具的技术采取了保密措施，并于2004年5月19日申请发明专利。2005年12月1日，国家专利局公布该发明专利申请，并于2006年8月9日授予甲公司专利权。此前，甲公司与乙公司于2004年7月签订专利实施许可合同，约定乙公司使用该灯具专利技术4年，每年许可使用费10万元。
2008年3月，甲公司欲以80万元将该专利技术转让给丙公司。唐某、乙公司也想以同等条件购买该专利技术。最终甲公司将该专利出让给了唐某。唐某购得专利后，拟以该灯具专利作价80万元作为出资，设立一家注册资本为300万元的有限责任公司。
2008年12月，有人向专利复审委员会申请宣告该专利无效，理由是丁公司已于2003年12月20日开始生产相同的灯具并在市场上销售，该发明不具有新颖性。经查，丁公司在获悉甲公司开发出新型灯具后，以不正当手段获取了甲公司的有关技术资料并一直在生产、销售该新型灯具。

该专利是否应当因为不具有新颖性而被宣告无效为什么( )。

A．不应被宣告无效

B．应当被宣告无效

C．已经丧失新颖性

D．在申请日前6个月内，他人未经申请人同意而泄露发明创造内容的，该发明创造并不丧失新颖性

pH对花色苷的热稳定性有很大的影响，在（）pH时稳定性较好。

A、碱性

B、中性

C、酸性

D、微碱性

神经性食物中毒的主要特征是（）

A.发热、呕吐、水样便

B.发热、腹痛、黏胨便

C.发热、流涕、黄水便

D.腹泻、呕吐、米泔水样便

E.眼肌及咽肌瘫痪

下图是我国亚热带某旅游名山景观照片。该山山顶海拔3099米，山坡陡立，地质学上称之为块状山，形成图中构造地貌的地质作用是（）

A.断裂上升

B.褶皱弯曲

C.冰川堆积

D.风力侵蚀

More than 40 million Americans between the ages of 5 and 18 attend schools throughout the United States. About 2 million school-age children are taught at home. While home schooling offers an alternative to the school environment, it has become a controversial issue.

Many public school advocates take a harsh attitude toward home schoolers, perceiving their actions as the ultimate slap in the face of public education and a damaging move for the children. Yet, as public school officials realize they stand little to gain by remaining hostile to the home-school population, the hard lines seem to be softening a bit. Some public schools have moved closer to tolerance, and，even in some cases, are seeking cooperation with home schoolers. " We are becoming relatively tolerant of home schoolers. Let’s give the kids access to public school so they’ll see it’s not as terrible as they’ve been told, and they’ll want to come back, " says John Marshall, an education official.

Perhaps, but don’t count on it, say home-school advocates. Some home schoolers oppose that public school system because they have p convictions that their approach to education—whether fueled by religious belief or the individual child’s interests and natural pace—is best. Other home schoolers contend " not so much that the schools teach heresy, but that schools teach whatever they teach inappropriately." "These parents are highly independent and strive to ’take responsibility’ for their own lives within a society that they define as bureaucratic and inefficient. " says Van Gallon.

But Howard Carol, spokesman for America’s largest teachers union, argues that home schooling parents are trying to hide their children from the real world, says Van Gallon. " Maybe we are going to run into people with problems, people that have a drug problem, people that have an alcohol problem, and teenage pregnancy. We have many problems that happen in our society and many of the children are victims. But shielding the children from the real mix of what happens every day is denying them something that they are going to need later in life. " Mr. Carol also questioned the competence of parents as teachers though he admitted that some home schoolers do better academically. " We want to make sure that a student is not denied the full range of curriculum experiences and appropriate materials, especially now with the new technology that is being introduced and the costs involved there. "

" The success of home schooling has been documented in standardized test scores administered by public school officials, " says Frank Bernet, the executive director of the National Association of College Admission Councilors. " I know why they are doing it, but I wonder why they can’t work with school officials and teachers to make the school what they want it to be. " The response from home schoolers: " We have tried that. NOW it’s time to strike out on our own. \

Public school teaching, in the opinions of home school advocates, is（）

A.systematic

B. inefficient

C. uninteresting

D. superficial