题干

若代数式2x2+3x的值是5,则代数式4x2+6x﹣9的值是(  )

A:10

B:1

C:-4

D:-8

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B

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    China's cancer researcher Zhu Chen, together with two French researchers Anne Dejean and Hugues de Thé, received Sjoberg Prize 2018 in Stockholm Concert Hall, Sweden on Friday.

    “We used wisdom from both Chinese and Western medicine and offered a cure to one of the most deadly cancers,” Chen told Xinhua, “I feel that Chinese medicine has potential to contribute more to human health. It struggles for benefiting all mankind. It's a language of peace, and of development and progress.” Chen recalled the cooperation with the two French researchers for over 30 years.

    This year's Sjoberg winners have developed a new and targeted treatment for a specific form of blood cancer called acute promyelocytic leukaemia (急性早幼粒白血病). It was once one of the deadliest forms of cancer, but it is now possible to cure nine out of ten patients who receive the new treatment. The winners have made this revolutionary development possible by methodically mapping the molecular mechanisms responsible for the disease.

    The Prize is awarded by the Royal Swedish Academy of Sciences and is funded (资助)by the Sjoberg Foundation. The foundation, with a donation of 2.5 billion US dollars, was founded in 2016, and serves to promote scientific research that focuses on cancer, health and the environment.

    The Prize is an annual international prize in cancer research awarded to individual researchers or research groups. The prize amounts to one million US dollars, of which 100,000US dollars is the prize sum and 900,000US dollars is funding for future research.

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单纯的境界

      ①单纯不是幼稚,更不是无知,单纯是一种心境,是诚恳务实的人,为了专心致力于所热爱的事业而竭力追求的一种简单心境,是人生摆脱喧嚣,洗尽铅华之后的另一种境界。

     ②佛语有言:“心系一处,杂念俱无,方可大进。”指的就是要心境单纯而只有一种信念,没有其他事物的干扰,全身心地投入到所要完成的事情当中, 精神集中而心境宁和,才可以取得较大的进步,才可以有所突破,有所造诣。

      ③西汉董仲舒研究儒学“三年不窥园”,为的是精力的高度集中;“大禹治水,三过家门而不入”,为的是心无牵绊;袁隆平致力于“杂交水稻”的研究当中在他的世界里只有水稻……试想,如果让董仲舒走出书房治理朝政,让大禹抽出时间照料家事,让袁隆平走出试验田接触社会里种种复杂的人际交往……那么这些成功者会取得这些成就吗?

      ④学者的心境应该是单纯的,“书生”所读是书,所想是书,所念是书,所爱仍是书。熊十力先生说:“学者之败,慕虚名而不务潜修也;品节之败,恋虚荣而不甘枯淡也。”他所提倡的“务潜修”“甘枯淡”也意指学者要心无旁骛,心系一念。

      ⑤心境极单纯的人往往在常人熟悉或练达的地方显得愚钝甚至一无所知。庄周宁愿“曳尾于涂中”也不求名达;陶朱公宁愿举家迁徙,也不愿做卿相;数学大师陈景润虽极具数学天赋,却有着极差的生活自理能力;释迦牟尼虽出身王室却离家出走,云游四方……是他们不喜欢荣耀繁华,不喜欢热闹的人际交往吗?他们只是明白自己还有更重要的事要去做、去追求。因此,虽然他们会在某些方面显得愚钝不谙人事,但他们在自己致力经营的地方却都取得了惊人的成就,这正是他们心境单纯的目的,这也是他们智慧过人之处。

      ⑥单纯是一种境界,心境单纯的人在自己钟爱的土地上无声播种,默默耕耘,他们漠视名利,无心与他人计较、争夺,如寒冬里无意争春的红梅,独自开放,傲雪凌霜,把生命释放在强烈热爱、执着追求的事情当中,刚毅而令人敬佩。

      ⑦单纯的人不争名不求利,“闲看庭前花开花落,静观天空云卷云舒”。但是在他们所致力的事情上,却有着强烈的热爱和执着的精神,这是他们的可爱之处,也是他们成功的原因。

                                                                                                                                     (摘自《时文选粹》2010年合订本,略有改动)