题干

一个小虫在数轴上先向右爬2个单位,再向左爬6个单位,所在位置正好距离数轴原点2个单位,则小虫的起始位置所表示的数是(   ).

A:6

B:

C:2或6

D:-2或4

上一题 下一题 0.0难度 选择题 更新时间:2017-03-20 01:34:21

答案(点此获取答案解析)

C

同类题3

阅读下面短文, 从短文后各题所给的四个选项(A、B、C、D)中, 选出可以填入空白处的最佳选项。
     “Paul must have been trying to carry his waste paper to garbage can and dropped a few pieces.” I1picking them up. 2later I found more pieces. No quiet sighing this time. I 3 ,“Who is throwing garbage?” No answer. Instead, I saw more bits of paper silently floating 4 from upstairs. Looking up, I saw my seven-year-old son, Paul.
     “Stop making a mess.” “It's not a mess. They're5.” “Sorry, what did you say?” I hadn't heard him clearly.
    He didn't answer me. Paul has autism (自闭症) and6answers a question, especially when he's7attentively on something else. He ran down the stairs. “Where are my other butterflies?” he asked,8around. Every time Paul 9five or more words together, my heart says a 10of thanks. But lately he seems to 11that the benefits of forming complete sentences when communicating are12of the effort.
    Butterflies. Of course. I rushed to13them from the garbage,14them off and handed them to my young artist. “Want to see them15again?” he asked with a shy smile. “Oh yes! They're beautiful.” I whispered. He ran back upstairs to float his16 down again. They really did look like beautiful butterflies.
    That day Paul 17me to look up at 18instead of down at garbage. How many other masterpieces (杰作) do I miss because I'm too caught up in my 19to take time to appreciate what's right in front of me? Life is not what happens to us. It's 20 we look at it. Now, I look up.

同类题4

阅读下文,回答问题

    草地,迷蒙的草地,笼罩在一片阴沉沉的雨雾里。分不清哪儿是“路”,哪儿是泥潭。一支钢铁般的队伍,正在这一片神奇的土地上行进着。

    断炊了,在他的干粮袋里,也只剩下几小块青稞饼。此刻,他迈着艰难的步履(lǚ)走着。那匹小马,也让因缺药而致腿伤化脓的战士骑了。忽然,他那消瘦的脸上,浮现出了严峻的神态:不远处,又有两名战士正倒在“路”旁。

    __好同志__不能倒下__他奔过去__弯下身子__拍一拍战士的眉胛(jiǎ)__首长__走__走不动了__战士喘着气__望着眼前这位魁梧的中年人__轻声说__两天没吃了__

    他听着,眉梢颤抖了一下,默默地从干粮袋里掏出那几小块青稞饼,分塞给战士:“吃吧!不吃,就走不出草地了。”

    当他的身影渐渐融在雨中时,一个战士捧着青稞饼,眼窝里闪着泪花。问:“他是谁呀?…“不知道”。另外一位战士回答嘿,“反正是一位首长,______师长,______政委。”

    进入草地的第七天了,晚上,部队准备宿营了。红军首长喝了一大碗苦涩的野菜汤,借着马灯微黄的光,打开一张军事地图。警卫员走近他身边,递给他一个纸包:“司令员,一个战士留下的,临终时说,一定要交给首长。”

    他轻轻打开纸包:呵,那是几小块青稞饼。