光端机输入接口的作用是将PCM电端机送来的信号变换成普通（）。

属于非遗传毒性致癌物的是（）

A.细胞毒物、促癌剂、免疫抑制剂、激素、过氧化物酶体增殖剂、固态物质

B.无机致癌物、前致癌物、直接致癌物

C.促癌剂、免疫抑制剂、无机致癌物、激素

D.免疫抑制剂、细胞毒物、固态物质直接致癌物、激素、过氧化物酶体增殖剂

E.前致癌物、无机致癌物、直接致癌物、固态物质

My mother, Marisol Torres, came with her family to Australia in the early 1960s. Then my parents’ marriage ended and Mum began the study of precious stones. Her interest in opals (猫眼石) took her to the New South Wales remote town of Lightning Ridge. There were no luxuries (奢华的享受), but she was closer to nature and had a chance to find black opals and make some money.

My mother was beautiful with dark hair and brown eyes, but she was also quiet and shy. Early in the Ridge years, she kept to herself, but later, she started going to the neighbourhood centre to make friends.

It was her dream to mine, but her get-rich-quick thinking was unrealistic. She was cheated and she was never very successful. But she kept a sense of humour and a charming smile.

Then, just as friendships began to blossom, she was diagnosed with cancer and had to return south for treatment. She had the intention of cooking Spanish food as special treat for her Ridge friends, but died too soon. In her honour, my aunt, Marisa, and I fulfilled her desire when we visited the Ridge in March last year.

People who mine the Ridge come from a cross section of society, from lawyers to travels. Looks don’t mean much: it can be hard to tell who is millionaire and who is poor. Opals attracted Sebastian and Hanna Deisenberger to Lightning Ridge. They planned a two-year stay, but became permanent residents.

Then there’s Neil Schellnegger, 45, who moved to the area with his parents when he was a child. He lives with his son, Luke. Luke is a shy 19-year-old boy who enjoys helping his dad. They haven’t had much luck over the past couple of years, but their passion for opals conquers disappointment. They love the peaceful lifestyle.

Danny Hatcher, 38, is a second-generation miner and president of the Lightning Ridge Miners’ Association. He is an optimistic man, driven by the desire to find the perfect opal. “It’s magic,” he explains. “Once you start opal mining you don’t want to do anything else… There is always the potential for finding a million dollars. Nothing beats it.”

It’s a place where dreams --- spiritual or material --- can be fulfilled; a place, for one last bet in life.

小题1:What made the author’s mother go to Lightning Ridge?

A．The luxurious life there.

B．Her new marriage there.

C．Her interest in opals.

D．Her passion for nature. .小题2:After the author’s mother died, she fulfilled her desire by __________.

A．treating her mother’s Ridge friends with Spanish food

B．writing a biography about her whole life

C．decorating her house in Lightning Ridge

D．finding a lot of black opals in Lightning Ridge小题3:We know from the passage that _________.

A．the rich and the poor can be distinguished by their looks

B．Luke is a successful miner, just like his father

C．Sebastian is planning to leave Lightning Ridge

D．Danny Hatcher’s parents were miners in Lightning Ridge小题4:Lightning Ridge is a place where dreams can be fulfilled because __________.

A．there are precious stones and life is peaceful

B．there are people from all walks of life

C．there are rich people who can help poor people

D．there is a lot of gold hidden in the ground小题5:What is the author’s purpose of giving Neil Schellnegger and Danny Hatcher as examples?

A．To show the magic power of opal mining.

B．To tell people it isn’t always hard to mine opals.

C．To warn people not to take up this kind of job.

D．To persuade people to look for more resources for the country.

2007年5月，A公司与B公司订立了一份80万元的购货合同。合同约定：2007年6月1日B公司发货，2007年6月10日A交付货款。B公司如期付货，但A公司却未按合同规定交付货款。
2007年6月20日，B公司上门催讨货款，A公司借口货物质量不合格，拒绝付款。此后，B公司因为董事会人员调整，公司内部一直处于混乱状态，没有再提起A公司欠款之事。2009年5月10日，由于山洪暴发冲坏了B公司的办公大楼和厂房，2009年8月20日，B公司才恢复正常经营。2009年9月1日，B公司新任领导再次提起A公司欠款问题，准备提起诉讼。B公司新任领导认为虽已超过2年诉讼时效，但由于山洪暴发属于不可抗力，应引起诉讼时效的中止。经了解，B公司得知A公司的另一债权人D公司经向人民法院申请A公司破产的申请。
2009年10月1日人民法院依法宣告A公司破产。A公司主要的债权、债务情况如下：
①2007年5月20日，A公司以自己价值250万元的办公楼作抵押，向工商银行贷款200万元，期限3年；
②2007年9月30日，A公司又以该办公楼作抵押，向建设银行贷款150万元，期限1年。因A公司不能清偿到期贷款，建设银行已于2009年2月1日向法院起诉，案件正在审理过程中；
③D公司为A公司债务的保证人，在2008年4月10日曾代替A公司清偿债务65万元，但D公司在2008年4月20日曾欠A公司债务50万元，D公司向管理人提出行使抵销权，抵销对A公司的50万元的债务。
④上述用于抵押的办公楼拍卖价款为250万元。
要求：根据上述事实及有关法律规定，回答下列问题：
1.B公司诉讼时效的中止的说法是否正确为什么

校园周围几百米以内不得开办电子游艺厅（）

A.500米

B.800米

C.200米

D.300米

儿童文学是专为（）创作并适合他们阅读的、具有独特（）和丰富价值的各类文学作品的总称。