题干

小明某天上午9时骑自行车离开家,15时回家,他有意描绘了离家的距离与时间的变化情况(如图所示)

(1)图象表示了哪两个变量的关系?哪个是自变量?哪个是因变量?

(2)10时和13时,他分别离家多远?

(3)他到达离家最远的地方是什么时间?离家多远?

(4)11时到12时他行驶了多少千米?

(5)他可能在哪段时间内休息,并吃午餐?

(6)他由离家最远的地方返回时的平均速度是多少?

上一题 下一题 0.0难度 选择题 更新时间:2019-10-16 08:52:33

答案(点此获取答案解析)

解:(1)由函数图象,得图象表示了时间、距离的关系,自变量是时间,因变量是距离;

(2)由纵坐标看出10时他距家15千米,13时他距家30千米;

(3)由横坐标看出12:00时离家最远,由纵坐标看出离家30千米;

(4)由纵坐标看出11时距家19千米,12时距家30千米,11时到12时他行驶了30﹣19=11(千米);

(5)由纵坐标看出12:00﹣13:00时距离没变且时间较长,得12:00﹣13:00休息并吃午饭;

(6)由横坐标看出回

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完形填空

    27- year - old Ross OC Jennings has become an online celebrity for his bagpipe-playing (演奏风笛) photos across the globe. He calls1 the First Piper.

    The seed for the world traveling idea 2 him when he attended a travel expo in London, where he met adventurers who shared their 3 from across the globe. Ross was attracted by their stories.

    The 4 began on a night in Tunisia in May 2014 by chance. Ross 5 his bags without knowing much about the North African country.6Tunisia, he traveled across Western Europe, the mountains of China, played in front of the Taj Mahal in India and Cambodians ancient temples. But his greatest7was in Kenya.

    On the way to Nairobi, Ross arrived at a famous 8 sanctuary (禁猎区) and hotel in Kenya. He begged the hotel owners to ask if he could play the bagpipes there. They answered 9“Of course the house was built by a Scotsman.” “the minute I started playing all these giraffes started 10towards me, rocking. It was the most 11 audience I've ever had.

    Ross has three 12when traveling. First, pipe in a school to interact with students; second, challenge himself to play in a dramatic place; and last, play in public. His Facebook is filled with 13 taken from around the world.

    Ross's journey is all 14 thanks to his unique music career, which started at the 15 of thirteen when he was offered the chance to play bagpipes at school. After leaving university, he16“the last thing I wanted to do was work behind a desk”. Inspired by the travel expo and equipped with his bagpipes, he made his wish to 17a real desk.

    18 planning what to do in the countries Ross visits, the plans seem to find him. He said, “Chance is a big part of it. That's why I partly, intentionally, don't try to plan too much.” The music connects people in uncommon and wonderful 19“Without having this dripping in clichés(陈词滥调), it is amazing how 20 does connect people and how it makes people smile,” Ross said.