题干

若函数f(x)=ax+loga(x+1)在[0,1]上的最大值与最小值之和为a,则a的值为(  )

A:2

B:4

C:12

D:14

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答案(点此获取答案解析)

C

同类题1

阅读下面短文, 掌握其大意, 然后从各题所给的A、B、C、D四个选项中选出最佳选项。

    A boy thought that he was the most unhappy person in the world. In his opinion, he was unlucky because almost everything 1always happened to him. He wanted to find the 2 to happiness. He walked a long way and finally came to a beautiful palace. There, he met the king.

    After learning 3 the boy came, the king suggested that he should look around the palace and come back in two hours. “At the same time, I want you to hold this spoon 4 milk,” said the king. “As you walk around my palace, carry this spoon 5 without spilling the milk.”

    The boy kept his eyes fixed on the spoon and began to walk around the golden palace. After two hours, he came back to the king. “Well,” asked the king. “Did you 6 the wonderful paintings in my dining hall? Did you enjoy the colorful flowers in the garden?” The boy felt sorry because he saw 7.  He only paid attention to the milk.

    "Then go back and you can see the beauty of my world.” said the king. This time the boy saw all of the works of art on the walls. He saw the great gardens and hills all around. He had a great time 8 he was walking around the palace. When he 9, he described everything he saw.

     "But where is the milk?” asked the king. Looking down at the spoon he held, the boy saw the milk was gone. “Well, there is only one piece of 10 I can give you,” said the king. “The secret to happiness is to see all the beauty of the world and also keep an eye on the milk on the spoon.”

同类题3

阅读下列短文,从每题所给的四个选项中,选出最佳选项。

    A teenager has gained a six-figure sum for a vampire (吸血鬼) novel she wrote after being inspired by the Twilight. Abigail Gibbs, 18, who started writing the book aged 14, released chapters of her novel online, where the book eventually received 17 million hits. Harper Collins in Britain has now signed this talented author following her extraordinary Internet success.

    Miss Gibbs, from Brixham, Devon, who is about to start studying English at Oxford University, is the first author to be discovered on Wattpad. Wattpad is an online library which allows subscribers (用户) to upload or read other people's stories. Miss Gibbs also said Stephenie Meyer's famous Twilight books had influenced her novel, The Dark Heroine. “I read the Twilight and did really enjoy it. At first, my parents were a bit opposed to my writing because I was staying up till 3 a.m. on school nights and they were worried that I might fall behind.”

    Miss Gibbs finished her book at the age of 16. She posted each chapter after she had written it on the Internet site, until she got to five chapters before the end when she stopped. “I had signed with an agent and he basically said, ‘Don't post anymore so as to keep the readers' anxiety”. That was tough because I disappeared in the site for a year and there were a lot of fans asking where I was. I have had so many requests from fans to upload the last five chapters; some people even said they were going to write their own endings.” Her fans can buy the e-book for £2.99, or wait for the paperback book priced at £6.99 in shops next month.