黄旭华是中国第一代攻击型核潜艇和战略导弹核潜艇总设计师。为保守国家最高机密，黄旭华在研制核潜艇期间，淡化了和家人之间的关系。他说：“对国家的忠，就是对父母最大的孝。”人们评价他：为国家做出了巨大贡献，却把名利看得淡如水，是中国优秀知识分子的代表。黄旭华的高尚品质在于（    ）

①坚持价值观对人生的正确导向作用

②在劳动和奉献中创造价值

③践行集体主义不谋求任何个人利益

④在砥砺自我中实现人生价值

一个三角形中至少有____个锐角。

计算

地球仪上某点经度是60°，纬度是30°，这样的地方有几处？（    ）

阅读理解

    Black Spider（蜘蛛）was having trouble catching bugs（臭虫）in his web, while Grey Spider caught two bugs in his.

    “You are so lucky,” Black Spider said to Grey Spider. “You have two bugs while I have none. It's not fair(公平的).”

    “Everyone has lucky days and unlucky days. Let's eat the bugs together,” said Grey Spider.

    Black Spider decided to join Grey Spider for lunch.

    “You must do some special things to get lucky, is it magic?” Grey Spider whispered.

    “No, build your web!” said Black Spider. “Repair your web! Enlarge your web! Make your web wider!”

    “Is that all?”

    “Yes, build a new web!” said Grey Spider.

    After lunch, Black Spider went back and made a new web. He built his web wider. Once he was done he slept all through the night because he was very tired.

    In the morning, Black Spider was excited to see four bugs in his web. He told Grey Spider about it. Grey Spider smiled at Black Spider. “By enlarging your web, you have enlarged your possibility to catch all these bugs,” Grey Spider said. “There is chance all around us. Luck is everywhere. You need to work to make it so more good luck comes your way.”