题目

如图A为水分从土壤中进入根内部和根尖的示意图，图B为处于某种状态的根细胞。据图回答下列问题： （1） 图A中，若根尖某处表皮细胞的一部分向外突出形成的结构称为（填序号）。 （2） 根尖生长最快的部位是[]。吸收能力最强的是（填序号）。 （3） 当根毛细胞液浓度大于土壤溶液浓度时，水分依次通过的结构是___________。 A . ①→②→③ B . ②→③→① C . ③→②→① D . ①→③→② （4） 某同学给一株植物施肥后，该Cars are very popular in America．When the kids are fourteen years old．They dream of having their own  16 ．Many students work after school to  17 a car．In most places  18 people learn to drive in high school．They have to take a  19 test to get a licence．Learning to drive and getting a driver’s  20 may be one of the most exciting things in their lives．For many，that piece of paper is an important symbol（象征）that they are now grown-ups．Americans seem to love their cars almost more than anything else．People almost never go to see a doctor when they are  21 ．But they will take  22 cars to a “hospital” at the smallest sign of a problem．At weekends，people  23 most of the time in washing and waxing（打蜡）their cars．For some families it is not enough to have  24 car．They often have two or even three．Husbands need a car to go to work．Housewives need a car to go shopping or to take the children to school or  25 activities．【小题1】A．carsB．computersC．bikesD．houses【小题2】A．borrowB．buyC．lendD．sell【小题3】A．oldB．tallC．strongD．young【小题4】A．language B．listeningC．drivingD．body【小题5】A．addressB．bookC．drivingD．body【小题6】A．sickB．healthyC．pleasedD．angry【小题7】A．hisB．herC．yourD．their【小题8】A．costB．takeC．spendD．pay【小题9】A．noB．oneC．someD．several【小题10】A．otherB．anotherC．othersD．else