题干

商品谷物农业的区位条件一般有                     (   )
①机械化水平高    
②地广人稀  
③市场广阔,交通运输便利   
④自然条件优越  
⑤农业科技发达

A:①②③⑤

B:①②③④

C:②③④⑤

D:①②③④⑤

上一题 下一题 0.0难度 选择题 更新时间:2013-03-25 10:21:20

答案(点此获取答案解析)

D

同类题1

阅读下文,回答问题。

那年我十四岁

       ①我爸爸是搞地质的,经常出差。妈妈是教师,每晚都要在灯下忙碌到深夜。我一个人总是很寂寞。

       ②转眼爸爸出差快一年了,还没回来。虽说每星期都有一封来自新疆的爸爸的信,不过我还是很惦记他,特别是我那艘“幸福号”船模快要进入装配阶段了,没有爸爸帮忙我是做不成的,而明春就要比赛了。

       ③一个周末的晚上,我一个人在家。一位叔叔来敲门,说他是爸爸的同事,从爸爸那儿来。

       ④“你爸爸,不简单!”他看着我,说话时声音很轻,“一名工人用电焊枪点烟,结果火星溅到尼龙篷上,帐篷烧起来,工人逃了出来。可你爸却冲进去,里面有三只氧气瓶!终于,最后一只氧气瓶也被推了出来,避免了一场灾难。”叔叔被烟呛住了,呛得眼圈发红,“要是我早回去一步帮他,那一切就不会发生了!”

       ⑤“发生什么了?”我打断他的话。

       ⑥“哦……他也没什么……只是……受了点轻伤……”从他含糊的话语中,我察觉到什么,“不可能,爸爸还经常给我写信呢!”

       ⑦“这些信都是你妈妈要求我模仿他的笔迹写的……”

       ⑧哦,妈妈!我明白了,为什么妈妈房里那盏小灯曾熄灭了整整一周!听叔叔说,那天是七月十三日下午四时,那时我在干什么呢?我打开日记本翻到那一页:“下午和妈怄气了,她忘了给我买月牙边的手帕了……”可这当儿,烈火正在把爸爸吞没。当大火烫着爸爸的眉毛、头发时,他疼吗?谁替他轻轻吹呀?我扑在叔叔的怀里大哭起来。我感到很对不起妈妈。

       ⑨当我的目光落到那艘未完工的“幸福号”上时,心里一阵冰凉,我举起它往地上一摔,碎了。

       ⑩这时,妈妈回来了。她一进屋就看到“幸福号”的残骸,问怎么回事。“我不留神把它摔坏了。”我淡定地回答,“放心,我可以重新再做。”之后,我回到自己的房间去……

      ⑪第二天清早,我早早地起床,待妈妈起身,我已把一切安排得井井有条。“妈妈,我快十四岁了,都成大人了,有些事,让我分担好了。”我用微笑回答妈妈惊异的目光。

      ⑫不知不觉间,草木又变得一片葱绿——春天来了!

      ⑬区船模比赛的日子终于到了。比赛开始,我重新做的“幸福号”起航了!瞧,它迎着阳光稳健地行驶,勇敢地战胜了一个又一个障碍。最后,我获得了冠军。

      ⑭正如妈妈所说,一个人永远有没完没了的考试。我的第一次严峻考验就这样圆满结束了。我记住了一点:经得起磨难的人,总能得到胜利!

同类题3

阅读理解

    For some students, getting better grades can seem like an impossible task sometimes. With the challenges(挑战) of school, just paying attention in class or studying hard isn't always enough. But what if there were other ways for students to improve their grades? For parents and students who have ever wondered if this is possible, now you can rest easy. Research suggests that a person who likes doing activities can improve their grades.

    Scientists think that those students who are active are not just exercising their bodies, but also exercising their brains(大脑). In turn, they can be able to improve their grades at school.

    In the most recent study, researchers found that when children played for half an hour each day, they were better at organizing(组织) their schoolwork as well as doing project work and learning traditionally “difficult” subjects, such as maths.

    What does this mean for children who aren't active? Researchers think that if kids don't get enough activities, they are going to be at a disadvantage when it comes to school performance.

    In the research experiment, a group of children skipped with ropes(跳绳), played basketball and did a number of other games or exercises. Another group of children didn't do any activities. They took part in testing both before experiment and after the experiment. Testing was mainly for maths and reading skills. Results showed that the children in the activity group did better on the tests than those who had no activity.

    All work and no play will not only make Jack a dull(迟钝的) boy, but will also negatively(消极地) affect his grades in school, according to a new study published in the Journal of Pediatrics.

    Parents complain(抱怨) children today are actually less active and they always worry about their grades. Dr. Belton, an expert, said, “If you'd like to see your kids do better in school, have them close their books, set down their pencils and go outside to play.”