易搜题 > 资格证大类 > 教资考试 > 问题详情
问题详情

为了美化校园环境,争创绿色学校,某县教育局委托园林公司对
A、B两校进行校园绿化。已知A校有如图1的阴影部分空地需铺设草坪,在甲、乙两地分别有同种草皮3500平方米和2500平方米出售,且售价一样,若园林公司向甲、乙两地购买草皮,其路程和运费单价表如下:路程、运费单价表  求:  (1)分别求出图1、图2的阴影部分面积;图1图2  (2)请你给出一种草皮运送方案,并求出总运费;  (3)请设计总运费最省的草皮运送方案,并说明理由。

未找到的试题在搜索页框底部可快速提交,在会员中心"提交的题"查看可解决状态。 收藏该题
查看答案

相关问题推荐

  • 在语法教学中,语法练习的形式有哪几种(12分)?请对任意两种练习形式进行举例说明(8分)。

  • 下列各组字,与“信——伸”两字间关系相同的一组是(  )。

    A、赴——讣

    B、泪——淚

    C、剩——賸

    D、予——與

  • 请阅读 Passage 2,完成第 26~30小题。Passage 2It's no surprise that Jennifer Senior's insightful, provocative magazine cover story, "I love My Children, I Hate My Life," is arousing much chatter-nothing gets people talking like the suggestion that child rearing is anything less than a completely fulfilling, life-enriching experience. Rather than concluding that children make parents either happy or miserable, Senior suggests we need to redefine happiness: instead of thinking of it as something that can be measured by moment-to-moment joy, we should consider being happy as a past-tense condition. Even though the day-to-day experience of raising kids can be soul-crushingly hard, Senior writes that"the very things that in the moment dampen our moods can later be sources of intense gratification and delight."The magazine cover showing an attractive mother holding a cute baby is hardly the only Madonna-and-child image on newsstands this week. There are also stories about newly adoptive-and newly single-mom Sandra Bullock, as well as the usual"Jennifer Aniston is pregnant" news. Practically every week features at least one celebrity mom, or mom-to-be, smiling on the newsstands.In a society that so persistently celebrates procreation, is it any wonder that admitting you regret having children is equivalent to admitting you support kitten-killing? It doesn't seem quite fair, then, to compare the regrets of parents to the regrets of the childless. Unhappy parents rarely are provoked to wonder if they shouldn't have had kids, but unhappy childless folks are bothered with the message that children are the single most important thing in the world: obviously their misery must be a direct result of the gaping baby-size holes in their lives.Of course, the image of parenthood that celebrity magazines like Us Weekly and People present is hugely unrealistic, especially when the parents are single mothers like Bullock. According to several studies concluding that parents are less happy than childless couples, single parents are the least happy of all. No shock there, considering how much work it is to raise a kid without a partner to lean on; yet to hear Sandra and Britney tell it, raising a kid on their "own" (read: with round-the-clock help) is a piece of cake.It's hard to imagine that many people are dumb enough to want children just because Reese and Angelina make it look so glamorous: most adults understand that a baby is not a haircut. But it's interesting to wonder if the images we see every week of stress-free, happiness-enhancing parenthood aren't in some small, subconscious way contributing to our own dissatisfactions with the actual experience, in the same way that a small part of us hoped getting"the Rachel" might make us look just a little bit like Jennifer Aniston.Which of the following can be inferred from the last paragraph?

    A、Having children contributes little to the glamour of celebrity moms.

    B、Celebrity moms have influenced our attitude towards child rearing.

    C、Having children intensifies our dissatisfaction with life.

    D、We sometimes neglect the happiness from child rearing.

  • 一束光线从点A(3,3)出发,经过y轴上点C反射后经过点B(1,0)则光线从A点到B点经过的路线长是(  )。

    A、4

    B、5

    C、6

    D、7

  • The following phrases exemplify the lose of plosion at the junction of words EXCEPT________

    A、keep going

    B、that car

    C、delicious apple

    D、a thousand pardons

联系客服 会员中心
TOP