题目

使用计算器进行计算时：在计算器显示DEG状态下，依次按键，结果显示为． 答案：0.5 ． 【考点】计算器—有理数． 【分析】DEG是角度制，显示的是cos（25°+35°）的值，求得cos60°=，即可求得． 【解答】解；在计算器显示DEG状态下，依次按键，结果显示的是cos60°的值． ∵cos60°=， ∴结果显示为0.5． 故答案为0.5． 【点评】本题考查的是计算器的使用，明确计算器的功能是解题的关键阅读理解。      Li Jun, a 17-year-old girl ① Shenzhen Foreign Language School, still can't believe her 10-day free training camp in the Alps in Switzerland last month was true!     But how did she achieve this once-in-a-lifetime opportunity?      Last October, a piece of short world news in a newspaper "免费看世界②", caught her eye. When she asked her friends if the story was real, they laughed at her, for they thought she was day-dreaming.③ However, Li decided to apply online the following weekend.      On December 14, Li Jun surprised her friends with an invitation letter from the program, the Pangaea Young Explorer Selection Camp set up by South African explorer Mike Horn.     Because of her performance during the training, Li was chosen as one of the eight young explorers to join Mike Horn in the South Island of New Zealand in May. 1. 在①处的空白处填入适当的词，使句意完整。     ___________________________________________________2. 将②句泽为英文。     ___________________________________________________3. 将③处画线的句子译为中文。    ___________________________________________________ 4-5 判断正(T)误(F)。 (     )4. The free training camp lasts for ten days. (     )5. AII the friends believed what the newspaper said.