①在下面直线上的相应位置标出 ，表示出496500。

②496500≈    万。

欧洲人能够在15世纪末开辟新航路，是由许多因素促成的。其中，主要受益于中国的因素是(    )

阅读下面的材料，回答问题：

近来，一种被称为EHEC（肠出血性大肠杆菌）耐抗生素细菌导致的急性肠道疾病在德国爆发，使整 个欧洲陷入恐慌．截止6月12日，德国肠出血性大肠杆茵感染者人数已达到4000人，死亡病例34例，800多名患者出现严重并发症---溶血性尿毒综合征． 目前疫情蔓延至欧盟所有的国家，世界各地已加大了对来自于疫区国家芽苗菜等蔬果产品的检验力度。

选词填空

根据语篇内容，用方框中所给词的正确形式填空，使短文通顺、连贯。

Learnto share (分享)

    One day, while I was sitting in my car in a parking area,I noticed a young boy in front of my car. “What is the boy doing?” I asked myself and looked closely. “Oh, he is ____up a coin from the ground.”When he ____up, we saw each other ____.He was not ____  than ten and was wearing one blue glove (手套) and one brown glove. His coat was too ____for him.

    As he walked away, I saw his ____, which were too old to wear. I rolled down my window and called him over. I asked him if he ____some money. He replied, “No.That's okay.”

    The parking area was wet. I could tell that his____were cold because he kept moving his weight from one foot to the other.

“Please,” I held out a five-dollar bill(钞票). “It's not much, but when the money is shared, it is much more ____,” I said.

He took off one of his gloves and took the money from my hand. His small hand was red and cold.

    He smiled and went away after saying “Thank you!”to me. That smile made me  ____warm in the cold winter.