题干

等腰三角形的一个角是50°,则它一腰上的高与底边的夹角是(   )

A:25°

B:40°

C:25°或40°

D:不能确定

上一题 下一题 0.0难度 选择题 更新时间:2018-03-06 04:01:55

答案(点此获取答案解析)

C

同类题3

阅读理解

    Fresh off his MasterChef Junior run, Evan Robinson, who is only 12 years old, is using his kitchen skills to raise money for Puerto Rico. The TV show contestant wanted to offer help after hurricanes(飓风) hit the country last September.

    “I've been seeing, all over the news, people struggling,” Evan said. “They can't get fresh water, electricity; they can't get really anything. I know I'm just a kid, but I think if a lot of people do something, a lot of things will get better.”

    He raises money by baking and taking online orders for homemade empanadas(馅 饼). He started cooking on a recent Friday night. By the next Sunday evening, he had filled orders for 420 empanadas — — roasted chicken, cheeseburger and vegetarian — — getting $18 for six empanadas and $30 for a dozen.

    His mom, Veronica Robinson, helped him send the empanadas around the city. “We've never done anything like this before,” she said. “But it's a great idea, so I want to help him make it work.”

    For Evan's out-of-town friends and supporters, he has set up a crowdfunding(众筹) page. Through it, he's hoping to raise $1, 500 in “virtual (虚 拟 的) empanadas”. This is because he heard on the news that it could take Puerto Rico years, maybe  even 10 years, to recover(复 原) from the hurricanes. And he said, “Fruit pies are up next. And my baking will continue as well.”

    It's a difficult job, especially for a kid with homework and Boy Scouts and friendships to tend to. But he doesn't seem worried.

    “It's what we're supposed to do.” he said. “I'm a human. They're humans. Why shouldn't I help them?”

    Indeed.

同类题4

Chris Jones 刚刚结束了一次不寻常的印度之旅,记者就此对他进行了采访。以下是采访的部分内容:

Reporter: ____

Chris: Well, it all started two years ago when I was planning a trip to India, I visited  a photographic(摄影的) exhibition of elephants and I realized that the only way to travel around India was on an elephant.

Reporter: ____

Chris: I flew to New Delhi and started looking for an elephant. I needed an elephant trained to carry people. I asked an expert for help. He taught me how to ride an elephant. He also helped me find an elephant.

Reporter: ____

Chris: Not too long, I bought a female(母的) elephant called Tara for about USD 6, 000.

Reporter: ____

Chris: Tara and I set off from New Delhi a week later. We were heading to Sonepur in northern India. And what a ride! Elephants can travel at about 6 miles an hour and Sonepur was more than 1, 200 km away. It took us 64 days to complete the journey.

Reporter: ____

Chris: Yes, a few. But nothing serious. On the third day, Tara hurt her foot. But that got better quickly. Also, there was a lot of heavy rain during the first week and we got very wet!

请根据Chris Jones 的回答,从A、B、C、D、E、F六个选项中选择恰当的问题填入相应的五个空格中。

A. How long did it take to find a suitable elephant?

B. What gave you the idea to travel around India on an elephant?

C. Did you have any problems on your journey?

D. Can you tell me the journey?

E. What did you do next?

F. An unusual journey.