Located in the checkroom in Union Station as I am, I see everybody that comes up the stairs. Harry came in a little over three years ago and waited at the head of the stairs for the passengers from the 9: 05 train.

    I remember seeing Harry that first evening. He wasn't much more than a thin, anxious kid then. He was all dressed up and I knew he was meeting his girl and that they would be married twenty minutes after she arrived.

    Well, the passengers came up and I had to get busy. I didn't look toward the stairs again until nearly time for the 9: 18 and I was very surprised to see that the young fellow was still there.

    She didn't come on the 9: 18 either, nor on the 9: 40, and when the passengers from the 10: 02 had all arrived and left, Harry was looking pretty desperate. Pretty soon he came close to my window so I called out and asked him what she looked like.

    "She's small and dark," he said, "and nineteen years old and very neat in the way she walks. She has a face," he said, thinking a minute, "that has lots of spirit. I mean she can get mad but she never stays mad for long, and her eyebrows come to a little point in the middle. She's got a brown fur, but maybe she isn't wearing it."

    He showed me the telegram he'd received: ARRIVE THURSDAY. MEET ME STATION. LOVE LOVE LOVE LOVE. MAY. He told me she was a typist and when he telephoned her former boss, all they know was that she left her job to get married.

    Harry met every train for the next three or four days. I could see that they all thought that May had simply played a trick on him. But I never believed that, somehow.

注意：1. 所续写短文的次数应为150左右;2. 应使用5个以上短文中标有下划线的关键词；3. 续写部分分为两段，每段的开头语都为你写好；4. 续写完成后，请用下划线标出你使用的关键词语。

    After about two weeks，Harry I had to get a job began to work as a clerk for Tony, the owner of the magazine stand(书报亭).……

    For a while they just hung there to each other laughing and crying.……

利用显微镜观察人的血细胞涂片，在两种不同的放大倍率下，视野分别为甲和乙，如图所示．下列相关叙述正确的是（　　）

“战士双脚走天下，四渡赤水出奇兵。乌江天险重飞渡，兵临贵阳逼昆明……”歌曲《四渡赤水出奇兵》描绘了红军长征的壮美画卷。以下关于“四渡赤水出奇兵”的叙述，正确的是（　　）

“悟空”探“妖”

    ①2015年12月17日8时12分，“悟空”在酒泉卫星发射中心升空。它是一只非常勤奋的“猴子”，每天要绕地球飞行15圈，从不偷懒。

    ②“悟空”是我国第一颗主要用来探测暗物质的人造卫星。其实，它就是一台空间望远镜，担负着寻找暗物质粒子、研究暗物质特性及其空间分布规律等任务。

    ③一般人听到“暗物质”会一脸茫然：这是什么“妖魔鬼怪”？为什么要寻找它？顾名思义，暗物质就是通过人眼和其他设备看不到的物质。天文学家在长期的观测研究中发现：许多星系中存在额外的、看不见的引力源，宇宙的总质量其实远远大于已知物质的总质量。他们据此推测，宇宙中应该还存在着一种“暗物质”。我们已知的各种物质基本上都要受电磁力的影响，要么吸收光，要么反射光，要么就自己发光；但暗物质不与光波发生作用，它对电磁力无动于衷，所以我们无法看到它。

    ④半个多世纪过去了，对暗物质的研究依然不明朗。目前，能够确定的是，宇宙总能量的26.8%由暗物质贡献，普通物质只占4.9%，暗物质的能量是普通物质的5倍以上。有这样隐形的庞然大物存在于宇宙中，却又看不见摸不着，这的确让科学家心痒难耐。而且，暗物质与我们人类的生存息息相关。科学家发现，所有发光物质提供的引力无法抵消星系内旋转时产生的离心力，因此推测，是暗物质在提供额外引力，以阻止星系解体。也就是说，没有暗物质就没有星系，也就没有人类。而且，作为一种全新的、未知的粒子，暗物质很有可能开创前所未有的应用空间。

    ⑤那么，怎样才能找到传说中的暗物质呢？“悟空”的任务，就是上天捕捉暗物质粒子碰撞湮灭时产生的高能电子。简单地说，“悟空”在观测中如果突然发现某一速度的电子射线数量变多了，但这又无法用现有理论来解释，那么这些电子射线很有可能是暗物质湮灭时产生的。

    ⑥全世界各国的科学家都希望能够第一个观测到这部分电子射线，从而获取暗物质存在的证据。除“悟空”外，目前世界上用以探测暗物质的设备，还有国际空间站的阿尔法磁谱仪和美国宇航局的费米空间望远镜。而中国的“悟空”，是迄今为止观测范围最宽、能量分辨率最优的暗物质粒子探测卫星。

    ⑦2017年末，“悟空”工程团队在世界权威科学杂志《自然》上发表论文，宣布获得了世界上最精确的高能电子宇宙射线能谱，该能谱将有助于发现暗物质存在的蛛丝马迹。接下来的2018年，我们希望“悟空”不负众望，用火眼金睛找到更多线索，早日探到“妖”的真容。