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第8章 双竞赛双奖?(1 / 2)

加入书签 | 推荐本书 | 问题反馈 |

丁阳泽脸色凝重。

宋河的答案让老师吃惊?

是正确的吓人,还是错得离谱?

刘璐清清嗓子,在全班目光注视下,继续念宋河的试卷。

“应用OPEN锌手指核酸酶方法的过程比较暴力。”

“如果科学家想得到串联的三个锌手指,识别一段9个DNA的碱基,需要先将9个碱基拆分成3+3+3的三段DNA序列。”

“而3个3碱基序列,需取95根锌手指备用,再将95+95+95根锌手指随机组合产生95的三次方,即个组合,然后再检测它们结合目标DNA序列的能力。因此非常耗时。”

刘璐念完抬起头,班里全是张大嘴巴的呆滞表情。

对高一新生来说,这段答案听上去完全是天书!

“答案正确,比参考答案还详细,宋河再拿一分!”刘璐赞赏地点头。

片刻的寂静,掌声雷动!

宋河眼前开始飘怨念值。

【丁阳泽感觉你很强,如临大敌,怨念值+100!】

【瞿正青对你的实力感到绝望,怨念值+50!】

【黎雨萌的自信被你击溃,怨念值+50!】

又多两百怨念值,累积怨念值1900点了。

宋河忽然发觉,小饭卡对他蛮有好感的,欺负她的时候,怨念值大多个位数,而教室里素不相识的同学,却动不动产出几十上百的怨念。

“接下来两道题,丁阳泽的作答!”刘璐继续念。

“第四题,表观遗传学研究的是不影响DNA序列,却可以长久在子孙后代中存在的影响。”刘璐点头,“答了一半,正确,给0.5分吧!”

“第五题,狮子追斑马,跑得慢的斑马被吃掉,跑得慢的狮子会饿死,于是斑马和狮子一代一代跑的越来越快,但还是吃和被吃的关系。”刘璐点头,“可以,1分!”

“最终成绩,宋河2分,丁阳泽2.5分,丁阳泽略胜一筹,两位同学都很优秀!”

刘璐投来欣赏的目光,“题目非常难,只要答对一道题,就有进入生物竞赛队的潜质!”

教室里掌声阵阵,无数道羡慕嫉妒的目光投向前排。

宋河面色严峻,他对自身的生物实力很自信,没想到居然翻车了?

幸亏不是选拔考,否则已和竞赛名额失之交臂!

他强忍回头看一眼丁阳泽的冲动,这丁阳泽为啥这么强?

丁阳泽虽然险胜,但他脸色难看。

区区零点五分的差距险胜,运气成分太大,可能换套卷子就是宋河赢。

题目打分过程也太草率,不同难度的题都一分,宋河答的锌手指题深邃得要命,如果正式考试,锌手指这类题必然分值高,可能宋河的总分靠这一道题就拉上来了!

丁阳泽警惕地盯着宋河的后脑勺,此人绝非善茬!

“宋河和丁阳泽跟我去办公室,领价值888元的神秘小礼物。”刘璐笑道,“其他同学上自习!”

一众同学羡慕嫉妒的目光中,宋河和丁阳泽离开座位。

宋河眼前又飘过一串嫉妒的怨念值,累计怨念值刚好攒到2000点。

……

办公室。

宋河和丁阳泽进门,忍不住面露惊色。

其他老师都是一群老师挤在一间办公室,空间狭窄宛如印度火车。

刘璐的办公室居然是宽敞奢华的单间,大空调皮沙发,待遇几乎能和校长一拼,不愧是生物竞赛一姐!

“你们的小礼物,看看喜欢吗?”刘璐打开办公桌抽屉,掏出两个手提袋。

宋河和丁阳泽连忙接过,果然,手提袋里厚厚几本生物习题集。

“咱班就一个生物竞赛队名额,选拔考试定在十天后,会比这次摸底考更难,所以想参加竞赛的话,好好准备,不然届时可能一题都做不出来!”刘璐认真叮嘱。

“老师这几本书的标价也到不了888元啊。”宋河抽出每本习题,看后面的条形码定价,“只有三百五十五块五。”

刘璐愣了一下,随即大笑,“臭小子还挑三拣四的,上面有我的签名,加上我的签名不值888吗?”

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