题目

以下几种生物分别是怎样适应环境的？变色龙 ；一些毒蛇有鲜艳的花纹、颜色 ；竹节虫具有和树枝一样的形态 ；北极熊有厚厚的脂肪 ． 答案：【答案】分析：此题考查的知识点是动物对环境的适应方式．解答时可以从保护色、警戒色、拟态等特点方面来切入．解答：解：保护色动物外表颜色与周围环境相类似，如避役的体色随环境而改变，目的是为了与环境颜色一致，避免敌害发现，属于保护色，变色龙的颜色随着周围环境而改变，颜色改     Most tourist destinations around China are witnessing travel peaks during the eight-day Mid-Autumn Festival and National Day holidays that run through Sunday. In Beijing, the Palace Museum, or the Forbidden City, attracted 182, 000 tourists on Tuesday, the biggest number on a single day, as millions of visitors arrived in the national capital. “We saw absolutely nothing but people’s heads,’’ said Guo Zhijun, 42, of Henan province. “We wanted our 11-year-old son to learn something from the trip, but we only ended up very tired. ”     Earlier, from Sunday noon to midday Monday, garbage collected at Tian’anmen Square in the heart of the city amounted to 7.9 tons, a quarter more than that in the same period of last year.     In the eastern coastal city of Qingdao, its top five major tourist sites attracted more than 200, 000 visitors on Tuesday.     Yesterday, thousands of cars jammed two 20-kilometer mountain roads winding to and out of the Lushan Mountain scenic area in the eastern province of Jiangxi. The area, with about 3, 000 car parking spaces, was unable to contain at least 8, 000 inbound cars, said head of the Lushan Mountain public security bureau.     The Lushan Mountain tourism administration temporarily stopped selling entrance tickets to prevent the traffic from growing on Tuesday afternoon. Similar measures could be taken during the rest of the holidays, a police officer said.     Emergency measures have been taken at other scenic sites. Crowded visitors overwhelmed the capacity（承载量）of the cable cars at Huashan Mountain, in Shaanxi province, leaving tens of thousands stuck at the peak late into Tuesday night. According to China Central Television, restless visitors demanded refunds from the tourism committee, and a lot of visitors had to give up and walk down the mountain.     Chen Li, deputy director of the Shaanxi Provincial Public Security Department, said on his micro blog that more than 300 policemen and government officials climbed up the mountain to help trapped visitors. Fearing that tourist sites might become too crowded, many people are staying at home, going shopping or making short suburban trips. A resident Mr. Wang in Nanchang, capital of Jiangxi, canceled long-distance travel plans after learning of heavy traffic on many highways during the first two days of the holidays. Instead, Wang, his wife and son went fishing in the suburbs before having a picnic. 47. What happened in the Forbidden City that Tuesday?     A. There were far more visitors coming than expected.     B. A large number of zones were opened to the visitors.     C. Over 7.9 tons of garbage was collected.     D. More than 200, 000 visitors gathered there. 48. What does the underlined word “overwhelmed” mean in paragraph 6?     A. showed up    B. added to    C. reached beyond    D. filled in 49. The writer wrote this article to________________.     A. advise traveling to different places to learn something     B. warn people not to climb those mountains on holidays     C. encourage people to change the travel plans according to the traffic     D. suggest we stay at home or go shopping during those holidays 50. Which of the following might be the best title?     A. Experiences from Different Travel Plans     B. Travel Peaks in China's Tourist Sites     C. Floods of People to the Forbidden City     D. Problems with Travelling on Holiday