在下列变化①大气固氮②硝酸银分解③实验室制取氨气中，按氮元素被氧化、被还原、既不

在不允许卖空的情况下，当两种证券的相关系数为（）时，可以通过按适当比例买入这两种证券，获得比这两种证券中任何一种风险都小的证券组合。

A.-1

B.-0.5

C.0.5

D.1

运动神经元病病理改变的显著特征是（）

A.神经元水肿

B.神经元变细

C.神经元选择性坏死

D.神经元固缩

E.神经元数目减少

甲侵犯了乙的专利权，乙向人民法院提出诉前责令甲停止侵犯其专利权行为的申请。下列哪些说法是正确的？（）

A．乙提出申请时应当提供担保

B．人民法院作出诉前责令甲停止有关行为的裁定，可以不通知甲

C．乙在人民法院采取停止有关行为的措施后15日内不起诉的，人民法院解除裁定采取的措施

D．在甲提出反担保的情况下，人民法院应当解除停止侵犯专利权行为裁定所采取的措施

Traditional fairytales are being abandoned by parents because they are too scary for their young children, a study found.

Research revealed one in five parents has ditched old classics such as Snow White and the Seven Dwarves and Rapunzel in favour of more modern books. One third of parents said their children have been left in tears after hearing the horrible details of Little Red Riding Hood. And nearly half of mothers and fathers refuse to read Rumplestiltskin to their kids as the themes of the story are kidnapping and execution. Similarly, Goldilocks and the Three Bears was also a tale likely to be left on the book shelf as parents felt it forgives stealing.

The survey of 2,000 adults was conducted to mark the launch of the hit US drama GRIMM, which starts tonight at 9 p.m. on Watch, and sees six episodes(片段) based on traditional fairytales. The poll found a quarter of parents polled wouldn’t consider reading a fairytale to their child until they had reached the age of five, as they prompt too many awkward questions from their offspring(后代子孙).

Steve Hornsey, General Manager of Watch, said: “Bedtime stories are supposed to soothe children and send them off to sleep soundly. But as we see in GRIMM, fairytales can be dark and dramatic tales so it’s understandable that parents worry about reading them to young children.”

“As adults we can see the innocence in fairytales, but a five year old with an over active imagination could take things too seriously. Despite the dark nature of classic fairytales, as we see in GRIMM, good will triumph over evil and there is always a moral to the story.”

The study also found two thirds of mums and dads try to avoid stories which might give their children nightmares.

However, half of parents said traditional tales are more likely to have a strong moral message than a lot of modern kids’ books, such as The Gruffalo, The Hungary Caterpillar and the Mr. Men books.

小题1:Why don’t some parents want to read Rumplestiltskin to their kids?

A．Rumplestiltskin is too long.

B．Rumplestiltskin is too difficult.

C．Rumplestiltskin forgives stealing.

D．Rumplestiltskin may influence Children badly.小题2:We can learn from paragraph 3 that Grimm is ___________.

A．a fairytales book

B．a movie for children

C．a play loved by children

D．a drama based on traditional fairytales小题3:The underlined word “soothe “in paragraph4 can be replaced by___________.

A．put down

B．calm down

C．take down

D．come down小题4:What’s the author’s attitude towards traditional fairytales?

A．Optimistic

B．Not mentioned

C．Casual

D．Disapproving

国家和自治区一直把（）作为实行民族区域自治政策的关键，通过送去学习、加强培训、基层锻炼、异地交流、挂职轮换等多种形式，培养和造就了一大批优秀少数民族干部。