题干

下列关于生物进化的叙述,正确的一项是(  )

A:对所有物种来说,地理隔离必然导致生殖隔离

B:基因突变虽对多数个体不利,但基因突变的方向和生物进化的方向是一致的

C:母虎和雄狮交配产下了“狮虎兽“,说明了并不是所有物种间都存在生殖隔离现象

D:若一种群中BB个体占81%,Bb占18%,bb个体占1%,则在基因库中B的频率为90%

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答案(点此获取答案解析)

D

同类题1

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

    It's very hard to write your own resume because a resume is a macro view of your life, but you live your life at the micro level. ____ After all, spending money on a resume writer is one of the few payouts that will have good return right away.

    But some of you will be able to do a proper job rewriting your resume on your own. ____ You need to rethink the goals and rethink the rules of a resume in order to approach the project like the best of the resume professionals.

    ____ A resume is not your life story. No one cares. The only things that should be on your resume are achievements. Anyone can do their job, but only a small percentage of the population can do their job well, wherever they go. The best way to show that you did your job well is from achievements. The best achievement is a promotion. It is an objective way to show that you impress the people you will work for. Presenting clearly your achievements is enough and also necessary. ____

    Don't make your resume a moral statement. It's a marketing document. Think about when a company announced the launch of their product. You need to take the same approach with your resume, because a resume is a marketing document. The best marketing documents show the product in the best light, which is to use whatever possible means to make you look good. ____

A. As long as you are not lying, you will be fine.

B. Don't focus on your responsibilities, focus on what you achieved.

C. Write what achievements you will make for the people you work for.

D. Anything on your resume that is not an achievement is wasting space.

E. So I recommend to a lot of people that they hire someone to help them.

F. The first thing you'll have to do is to make some mental shifts.

G. So learning to write your own resume is important.

同类题3

阅读下文,回答问题

    甲只见两个客人去车子前取出两个椰瓢来,一个捧出一大捧枣子来。七个人立在桶边,开了桶盖,轮替换着舀那酒吃,把枣子过口。无一时,一桶酒都吃尽了。七个客人道:“正不曾问得你多少价钱?”那汉道:“我一了不说价,五贯足钱一桶,十贯一担。”七个客人道:“五贯便依你五贯,只饶我们一瓢吃。”那汉道:“饶不得,做定的价钱!”一个客人把钱还他,一个客人便去揭开桶盖,兜了一瓢,拿上便吃。那汉去夺时,这客人手拿半瓢酒,望松林里便走。那汉赶将去。只见这边一个客人从松林里走将出来,手里拿一个瓢,便来桶里舀了一瓢酒。那汉看见,抢来劈手夺住,望桶里一倾,便盖了桶盖,将瓢望地下一丢,口里说道:“你这客人好不君子相!戴头识脸的,也这般罗唣!”

    乙我且问你:这七人端的是谁?不是别人,原来正是晁盖、吴用、公孙胜、刘唐、三阮这七个。却才那个挑酒的汉子便是白日鼠白胜。却怎地用药?原来挑上冈子时,两桶都是好酒。七个人先吃了一桶,刘唐揭起桶盖,又兜了半瓢吃,故意要他们看着,只是叫人死心塌地。次后,吴用去松林里取出药来,抖在瓢里,只做走来饶他酒吃,把瓢去兜时,药已搅在酒里,假意兜半瓢吃,那白胜劈手夺来,倾在桶里。这个便是计策。那计较都是吴用主张。这个唤做“智取生辰纲”。