题干

如果点A(m,n)、B(m﹣1,n﹣2)均在一次函数y=kx+b(k≠0)的图象上,那么k的值为(   )

A:2

B:1

C:﹣1

D:﹣2

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答案(点此获取答案解析)

A

同类题3

阅读理解

    For Zack, the shave was more than just a way to fund lifesaving research. It was a way to honor his late brother, Taylor Frink.

    Taylor, a volunteer firefighter in North Carolina, was killed in a car accident last September. Before his passing, Taylor was an eager supporter of St. Baldrick's. He went bald(秃头)for the cause in 2015, supporting kids with cancer and raising money to find cures.

    As a local hero, Taylor was beloved by the community. When he died, more than 1, 000 people attended his funeral to pay their respects. Zack looked up to his brother and this was the reason why he decided to become a junior firefighter himself. They did everything together. Zack remembers.

    Zack knew his brother had planned to shave again in 2016, so without hesitation he decided to fill his shoes and registered to shave at the local St. Baldrick's event in Kinston, N. C.

    “He was always goodhearted, and I want to make my brother proud,” shares Zack.

    As part of Zack's kindnesses, he raised more than $ 1,000 for the St. Baldrick's Foundation primarily by selling T-shirts he designed. Leading up to the event, Zack also visited his city council, commissioner's office and challenged the local official department to get involved.

    “We are not going to let Taylor's name be forgotten. That is what I love about St Baldrick's,” says Jean Culbreth, volunteer event organizer. “Zack gets it. He gets that what he is doing is keeping his brother's name alive.”

    The day finally came and Zack took his seat under the clippers (剪具), not only to honor his brother but to help kids with cancer. It was a special moment for all, and by the end of the day the event had raised more than $ 22,000!

同类题4

阅读下面的材料,从每题所给的A、B、C、D三个选项中,选出最佳选项回答问题或完成句子。

D

    Nowadays, phone calls and messages help us communicate with others more often. It means that we seldom write letters now. But a TV show. Letters alive, is bringing back this old habit.

    Letters Alive invites famous actors and actresses but there are no funny jokes or different competitions. Instead, only one person walks up to a microphone and reads a letter. The letters were written by people from different times in history. For example, in one episode(集), they read a letter written by the famous writer Xiao Hong to her younger brother in 1941. The letter shows that Xiao Hong missed her brother so much and had great hopes for his future.

    “Every letter opens another world for us, " said Guan Zhangwen, the director of the TV show. “It seems that we can experience the real lives and feelings of the writers". Since its first episode on December 5, 2016, Letters Alive has been widely praised. Many audiences(观众)say that it has provided a breath of fresh air to today's TV shows.

    Besides Letters Alive, some other cultural TV shows have also attracted(吸引)Chinese audiences. They include the Chinese Poetry Conference, a traditional Chinese poetry competition and Readers, a program that invites people to read poems and articles they like or wrote. It suggests that cultural values and true feelings are becoming our interest.