题干

2011年2月15日上午,太阳黑子活动区爆发了一次大级别的耀斑。回答题。

上一题 下一题 0.0难度 选择题 更新时间:2018-06-19 11:01:49

答案(点此获取答案解析)

同类题3

阅读下文,回答相关问题

                                                                                             梯   子
                                                                                              周粲
        年轻的爸爸和他的儿子一起在后花园放风筝。小小的园地,小小的风筝。
        小小的风筝飞呀飞的,就飞到了墙头上。墙头上的野花,把风筝紧紧地缠着。
        于是爸爸说,必须去拿一架梯子来,然后爬上梯子,取下墙头上的风筝。
        爸爸要爬上梯子,但是儿子说:“爸爸,让我来吧!”
        爸爸看了看他九岁的儿子,想了又想,终于说:“也好,让你来就让你来。”
        猴子一般地,儿子爬到梯子的最高一级了。
        儿子转过头来,嘻嘻地笑。他的笑声,像用早晨的牵牛花吹出来的。
        解开了风筝绕在野花上的线,正要下来,爸爸却用一只大手和一个声音制止了他,爸爸说:“慢着!”
        儿子停住了,望着爸爸,用眼睛问爸爸:“怎么啦?”
        爸爸说:“我先讲个故事给你听了,你再下来。”
        于是儿子笑得更开心,他一手抓住梯子,一手拿着风筝,等爸爸讲故事,爸爸讲的故事,没有一次不好听的。
        爸爸说:“从前有个爸爸,告诉他那个站在一架很高很高的梯子上的儿子说:你跳下来!你一跳下来,爸爸一定会在下面把你抱住。听见爸爸这么说,儿子很放心,就像游泳时跳进水里去一样,纵身一跳。哪里知道当儿子就要投进爸爸的怀抱里的前一秒钟,爸爸的身体一闪,站在一边。儿子扑了个空,掉在地上,屁股差一点就开花。哭哭啼啼地站起身来,儿子问爸爸:为什么要骗他。爸爸说:我要给你一个教训,连你爸爸的话都靠不住,别人说的话,更不必说了。”停了一停,爸爸继续说:“我们也来照着做一次好不好?”
        儿子一听,脸都变白了。
        爸爸说:“不要怕,勇敢一点,你只要跳那么一次就行了。我要你留下深刻的印象,免得你以后长大了,容易上人家的当。”
        但是儿子显然并没有被爸爸的话所说服。他脸上惊愕的表情,丝毫没有消退。然而他还是不敢违抗命令。他站在那儿,动也不敢动。
        爸爸开始发号施令了:“听着啊,我喊一二三,喊到三的时候,你就跳下来,然后我就把伸出去假装要接住你的手缩回来,让你跌一个屁滚尿流!”
        站在梯子上,儿子的脸像一个还没熟透的橘子。
        爸爸喊了:“一……二……三!”咬紧牙根,忍着泪,儿子从梯子上跳下来了。他等待着自己的身体像一个南瓜,扑的一声,摔得支离破碎……
        然而,好奇怪,爸爸的手竟然没缩回去,他的身体也没移开。他还是定定地站在原来的地方。他把掉到他两手中的儿子,牢牢固固、结结实实地接住了,抱住了。
        儿子虽然不曾受伤,但是他的神情,比刚才还要疑惑。张大了眼睛,他问:“爸爸,你为什么骗我?”
         爸爸笑出声来,爸爸说:“爸爸要让你知道,即使是别人的话,有时也是可以信任的,何况是爸爸的话呢!”
        所有的玫瑰花,都回到儿子脸上。他搂住爸爸,不住地吻爸爸的双颊。
        爸爸和儿子拉着风筝,向后园的一角跑去。

同类题5

阅读理解

    I have a friend named Monty Roberts who owns a horse ranch(牧马场). The last time I was there he told me his story. When he was young, his family was too poor to have a house to live in.As a result , when he was in high school, all the students were asked to write a paper about what they wanted to be and do when they grew up. That night he wrote a seven-page paper describing his goal of owning a horse ranch. He also drew a picture to show a 4,000-square-foot house that would sit on a beautiful farm. The next day he handed it in to his teacher. Two days later he received his paper back. On the front page was a large red F. Roberts asked, “Why did I receive an F?” He teacher said, “This is an unrealistic dream for a young boy like you. Owning a horse ranch requires a lot of money.” Then the teacher added, “If you will rewrite this paper with a more realistic goal, I will reconsider your grade.”

    The boy went home and thought about it for a long and hard time. He asked his father what he should do. His father said, “ Look, son, you have to make up your own mind on this. However, I think it is a very important decision for you.”Finally, after sitting with it for a week, the boy turned in the same paper, making no changes at all. He told his teacher “you could keep the F and I still keep my dream”.

    He tells me this story because I am sitting in his 4,000-square-foot house in the middle of the 200-acre horse ranch. “I still have that school paper now.” He added, “The best part of the story is that two years ago that  teacher brought 30 kids to camp out on my ranch for a week.” When the teacher was leaving, he said, Look, Monty, I can tell you this now. When I was your teacher, I was something of a dream stealer.During those years I stole a lot of kids' dreams. Luckily, you had enough gumption not to give up on yours. .”