我国杂技历史悠久，因表演技巧高超而深受观众喜爱。在现代，我国杂技融入音乐、舞蹈等元素，利用声、光、电效果，配以情景故事，既惊险刺激又妙趣横生，许多节目蜚声海内外。我国现代杂技艺术蜚声海内外，主要得益于（    ）

①现代传媒超越时空的传播功能

②用现代流行艺术元素取代传统艺术元素

③在继承传统基础上满足了现代公众的审美需求

④以现代艺术手段展现我国杂技的民族特色

计算

80×1.25×4.3－4.3=____

6月5日是“世界环境日”下列行为中不利于保护生态环境的是（    ）

阅读理解
Henry was from the United States and he had come to London for a holiday.
One day he was not feeling well.  So he was to the clerk at the desk of his hotel and said, “I want to see a doctor. Can you give me the name of a good one?” The clerk looked in a book, and said, “Dr. Grey.”
“Is he expensive?”
“Well,” the clerk answered, “he always asks for his patients two pounds for their first visit to him, and 1.5 pounds for later visit.”
Henry decided (决定)  to save 50 pence. When he went to see the doctor he said, “I’ve come again, doctor.”
For a few seconds the doctor looked at his face carefully without saying anything. Then he nodded and said, “Oh, yes.” He examined (检查) him and then said, “Everything’s going as it should do. Just continue (继续)with the medicine (药) I gave you last time.”