在光照最强的夏季中午，叶肉细胞内的C₃、C₅和ATP的含量变化情况依次是（   ）

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    When Jeanne Calment entered the world in 1875, telephones and automobiles still lay in the future. Albert Einstein and Pablo Picasso were not yet born. The Eiffel Tower was 14 years from being built. As a teenager, she met Vincent Van Gogh, near her home in Arles, in the south of France. He was “very ugly, ungracious, impolite, sick—I forgive him, they called him loco (精神失常的)”, she recalled. When she died last week at age 122, she was the world's eldest person. (There are others who claimed to the title, but only Calment had the official documents to prove her age.)

    Each February 21, her birthday, she would share the secrets of long life. Some years it was “a sense of humour”, others it was “keeping busy”. “God must have forgotten me,” she once explained. The truth probably was that her mother reportedly lived to be 86 and her father 94.

    Her life had its sadness: she outlived her husband, her only daughter and her grandson. According to a friend, she was imperturbable. “If you can't do anything about it,” she reportedly said, “don't worry about it.”

    In her last years she was nearly blind and deaf, but her health remained good. She ate a few bars of chocolate each week and continued smoking until a few years ago, when she could no longer light her own cigarettes. She never lost her sense of humour. On her 110^th birthday, she commented, “I've only ever had one wrinkle, and I'm sitting on it. “Her longevity made her famous; her spirit made her eternal (永恒的).

下列关于草履虫的说法中，正确的是（  ）

    One day，a teacher entered the classroom and told the students about a test. After hearing，all students were seated and waited for the test to1. Now, the teacher gave the test papers to all students and put the text face down at the desk. When he finished handing out the test to all students, he asked2 to turn the test pages and begin.

    Students were surprised to see that there was not a 3 but just a black dot   in the center of the page. The teacher noticed the students' face expression and told them, “I want you to write about 4you see there.”

The students were still5but got started with the test. At the end of the class, the teacher took all answer sheets and started reading each answer from each sheet in front of all students. All of them described about the black dot and tried to explain its position etc. After the teacher finished reading, the whole class was6.

    Then professor began to explain, “Don't worry, I am not going to give you 7 for this but I just want you to think about something. Here everyone focused on the black dot and wrote about it,8no one wrote about the white paper, the 9 is with our lives. The white paper stands for our whole life and the black spot stands for10in our life.

    Our life is a gift given to us by God,11love and care, and we always have reasons to celebrate –our friends around us, the job that can 12us our living, the miracles  we see every day.

    Still we just13 day to day problems like health problems, lack of money, problems in relationships etc. but we never see that these problems are very small compared to14 we have in our lives.”

    So we should try to take eyes off our problems and15each moment that life gives us. Be happy and live life positively.

    My name is Zhang Hui . Today is my birthday . I'm twelve years old now . Dad gives me a model plane . Mum gives me a doll . I'm opening the presents , but the bell rings . It's my friend , LiQiang . He gives me a science book and says , “Happy birthday !”We eat a big cake for dinner . I have a great birthday , and we are all very happy !