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     The "aha moment"(顿悟时刻) for Arjun Nagendran came one recent afternoon while he was cleaning up the muddy paw prints, and his pet dog, Rocky, was tracking across the house "again".

    "Why not make shoes for dogs?" the 10-year-old boy thought. For most kids, the moment might have

ended right here. But for Arjun and five of his classmates from Littleton School, an accidental idea proved

talent when they won first place at the first-ever Student Inventors Day at the Liberty Science Center in

Jersey City. The winning invention, "Green Paws"-an eco-friendly dog shoe made from bark, three leaves and recycled rubber-got the group a $1,000 prize, two television appearances and a shot at being the

next "As Seen on TV" hit product.

    More than 20 schools, most of them from New Jersey, gathered at the center to show their green

inventions. Each team had 10 minutes to introduce their inventions to the judges. In the end, the chief

judge Khubani announced that it was the Green Paws product that stood out, particularly because his

company had been looking into the very idea of how to keep paws clean.

    Pet products are usually popular sellers, he said, noting that his company has marked four new pet

inventions this year alone. And while his senior managers had put forward the idea of new paw wipes,

they had never thought of pet shoes, he said.

    "We thought about cleaning pets' paws, but we never thought about keeping them clean in the first

place." Khubani said after the event. "They actually have an idea that is marketable." The company will

begin conducting market research on Green Paws this week, he said. But Arjun and his team will have to

put off another day before they receive congratulations from their classmates.

1.What is the direct reason for Arjun's inventing "Green Paws"?

A. That his school inspired students to join in the invention competition

B. That Khubani's company invited him and his classmates to invent it

C. That his pet dog made the floor dirty with dirty paws

D. That his parents encouraged him to be a great inventor

2.The underlined sentence in Paragraph2 may mean ____________.

A. not all children are talented because of IQ

B. most children think twice before taking action

C. most children end their fresh ideas with actions

D. most children don't translate their ideas into action

3. What does the forth paragraph aim to tell us?

A. To prove Arjun's idea is marketable.

B. To praise Arjun's talent in invention.

C. To complain his employees are not creative.

D. To explain what is the "aha" moment.

4. Why will Khubani's company carry out market research on "Green Paws"?

A. They plan to give Arjun and his classmates more prizes

B. They hope to produce more "Paws" to make profits

C. They hope to ensure the fairness of the competition

D. They plan to find the carbon footprint of "Green Paws"