问题
选择题
若a、b、c是△ABC的三边长，化简|a+b﹣c|+|a﹣b﹣c|的结果为 [ ]
A．2b
B．0
C．2a
D．2a﹣2c
答案
答案：A
搜题请搜索小程序“爱下问搜题”
若a、b、c是△ABC的三边长，化简|a+b﹣c|+|a﹣b﹣c|的结果为 [ ]
A．2b
B．0
C．2a
D．2a﹣2c
答案：A
| 阅读理解 | ||||||||||
| Day 1 Los Angeles---Las Vegas Start the tour following the route of San Bernardino Mountain and enter the Mojave Desert to the State of Nevada, "the entertainment capital of the world". Upon arrival in the afternoon, you are free at leisure. You may take an optional night tour to explore the prosperity of night life in Las Vegas and see the famous shows such as the Fremont Street Viva Vision, Fountain Show at Bellagio and Mardi Gras at Rio. Overnight. Hotel: Stratosphere Hotel or Similar Day 2 Las Vegas---Grand Canyon West Rim---Hoover Dam--- Las Vegas In the morning, visit one of the Seven Wonders of the World, the Grand Canyon (大峡谷). It is the World's Seventh Natural Wonder. As you gaze out from the rim, you're viewing 2 billion years of geologic history. Millions of people each year stand in awe at the canyon and leave with a sense of fulfillment and realization that they have witnessed nature at her finest. You may take an optional visit to the "Skywalk", which is the new gigantic construction built on the every edge of the Grand Canyon West Rim. The Skywalk is suspended 4,000 feet above the Colorado River. This $60 million dollars bridge can withstand the weight of 71 fully loaded Boeing 74 airplanes (more than 71 million pounds). It is the tallest man-made structure in the world. From the bridge, you can step out onto the glass floor for a 720 degree view of the Canyon. You may also take an optional helicopter or boat tour to see the true beauty of the Grand Canyon. Afterwards, proceed to Hoover Dam, which is one of the Seven Wonders of the Industrial World. (All customers are required to pay $67 admission fee to Grand Canyon West Rim upon arrival) Hotel: Stratosphere Hotel or Similar Day 3 Las Vegas---Chocolate Factory---Botanical Cactus Gardens---L.A. Visit Ethel M Chocolate Factory and Botanical Cactus Gardens before leaving Las Vegas. Stop by Barstow for a short rest before continuing to Los Angeles. Arrive in Los Angeles in the evening for a wonderful conclusion of the trip.
3:00PM Tropicana Hotel (Bus Parking Lot) | ||||||||||
| 1. According to the passage, if you conclude Grand Canyon West Rim in your trip,______. | ||||||||||
| A. you will feel very disappointed. B. you will feel very satisfied. C. you will feel very frightened. D. you will feel very crazy. | ||||||||||
| 2. If a family of two adults and one child attends all the activities of the first day, they need to pay _____. | ||||||||||
| A.$148 B.$143 C.$218 D.$289 | ||||||||||
| 3. Which of the following is the right order of part of the places of the trip? | ||||||||||
| A. Los Angeles---the Mojave Desert---San Bernardino---Hoover Dam---L.A. B. the State of Nevada---Las Vegas---the Grand Canyon---Botanical Cactus Gardens---L.A. C. Skywalk---the Grand Canyon---Hoover Dam---Chocolate Factory---L.A.---Las Vegas D. Los Angeles---Las Vegas---the Mojave Desert---the Grand Canyon---L.A. | ||||||||||
| 4. Which description about the Skywalk is TRUE? | ||||||||||
| A. It is one of the seven natural wonders in the world. B. It is a bridge which can withstand the weight of 74 fully loaded Boeing 71 airplanes. C. It is one of the seven wonders of the Industrial World. D. It is the tallest man-made structure in the world. . |