20xx年陜西專版金版新學(xué)案高三英語一輪測(cè)試卷外研版必修26(編輯修改稿)
2025-03-15 03:39 本頁面
【文章內(nèi)容簡(jiǎn)介】 ot before drivingB．it was so dark that the girl couldn’t see very clearlyC．a(chǎn)nother car appeared on the girl’s lane suddenlyD．the girl didn’t drive with great care2．We can infer that the girl________.A．couldn’t say anything at hospitalB．would lose her job in the storeC．was badly injured in the accidentD．was careless with making friends3．The guy got the news that the girl was in hospital possibly from________.A．the manager B．the girl’s motherC．the doctor D．the girl herself4．The girl thought that________.A．a(chǎn) traffic accident might bring good luckB．it was the car accident that brought about their marriageC．a(chǎn) true friend is one who helps you in needD．there was true love and friendship in the world(2010年江西師大附中，臨川一中聯(lián)考，E)Plants have family values， seems，with new research suggesting they can recognize close relatives in order to work Dudley and Amanda File of McMaster University in Ontario，Canada，report they have demonstrated for the first time that plants can recognize their kin (親屬)．Plants from the same species of wildflower grew aggressively alongside unrelated neighbors but were less petitive when they shared soil with their siblings (同胞)，the study North American species，named sea rocket，showed more vigorous root growth when planted in pots with strangers than when raised with relatives of its addition to restraining root growth，such plants may also develop different stem lengths in the presence of siblings.This is an example of kin selection，a behavior mon in aninals in which closely related individuals take a group approach to succeeding in their environment，the researchers selection also applies to petition，the scientists added，because if family members pete less with each other，the group will do better overall.“Everywhere you look，plants are growing right up next to other plants，” Dudley said，pointing out that usually it’s a case of each plant for itself.“But sometimes those plants are related，and there are benefits to not wasting resources on being petitive.”How the plants determine which of their neighbors are siblings remains a mystery，Dudley and memory appear to be important for kin recognition in animals，but this isn’t an option for plants，she researchers speculate (推測(cè)) that plants municate through their roots，identifying themselves using tiny chemical signatures specific to each plant’s family.The new study may have important imp
范文總結(jié)相關(guān)推薦
鄂ICP備17016276號(hào)-1