一个两位数，十位上的数与个位上的数之和是7，如果把这个两位数加上9，所得的两位数的个位数字，十位数字恰好分别是原来两位数的十位数字和个位数字，则这个两位数是（　　）

阅读下面短文，掌握其大意，然后从所给的A、B、C和D项中，选出最佳选项。

    Animals United is a 3D German cartoon. Reinhard Klooss and Holger Tappe directed it. It is a story about animals.They get together to find 1. Along their journey, lots of funny things 2, and of course, they have a lot of adventures

    The animals in the grassland in Africa are 3 for coming flood. However, this year's flood seems to come later than in other years. The animals become unhappy and 4. At the same time, some animals from other places come to the grasslands to look for peace. However, the things are5 because the water is becoming less and less. 6 they decide to look for the river.

    Finally, they find the reason why they don't have any water to drink. People7a dam like a strong wall so that humans can have a better life. After a long fight with humans, they let the world know 8 that animals are in danger.

    This film is about environmental matters. The humans are the bad and the animals are the good. This film is to give humans a warning.They must not destroy the homes of animals or damage nature in order to9a better life. Humans should know that animals also have their own 10.

选择最恰当的词，并用其正确形式填空，每词限用一次。

    It was Mother's Day, Nancy was 800 miles away from her parents, so she was a little ____ . In the morning she ____her mother to wish her a happy Mother's Day, and her mother told her about the beautiful flowers in the garden. Later that day, ____  she told her husband about the flowers, he said, "I know where we can find all that you want. Get our children Peter and Lily, and come on." So they went, ____  down the country roads.  
     There on a ____  , they saw a lot of beautiful purple flowers. Nancy ran ____    to enjoy the flowers. Carefully, she picked a few here and a few there. And on their way home, there was a big smile ____ her face.
     When they were passing a nursing home, she saw an old granny sitting in a chair. The granny had ____ children with her. They stopped the car and Nancy walked to the old woman, put the flowers in her hands, and smiled at her. The old granny ____  her again and again. She smiled happily, too.
     When Nancy ____ to her car, her children asked her, " Who is that old granny? Why did you give our flowers to her?”
" I do't know her.” Nancy said, "But it's Mother's Day, and she is alone. But I have both of you, and I still have my mother. Just think how much those flowers meant to her.