题目内容：

University graduates Mallorie Brodie and Lauren Hasegawa, who invented a smartphone app that tracks construction defects（缺陷）for commercial builders, had a tiger by the tail.

Bridgit, which they founded in 2012, launched a cloud-based communications platform that helped manage defects on construction sites, which can delay projects and result in costly repairs if left unchecked. The smartphone application lets site supervisors take photos of cracks or damaged paint, share them with employees and track the problems to solution.

More than 600 subcontractors used the pilot version in many building sites before the commercial version, called Closeout, officially launched.

Feedback(反馈)was so good that they began to wonder: Why limit their invention to a specific industry? Why not turn it into some kind of a handy tool for consumers too? This became their dilemma. In other words, should they stay the course or look for wider applications of their app?

The experts polled all agreed Bridgit should stay focused on its original goal. Ms. Hasegawa and Ms. Brodie took that advice.

As more business customers signed on, it became clear that they made the right decision. Since then, the company’s growth has been rapid.

Earlier this year, Bridgit launched Closeout ,which is designed so that even the least tech-savvy can use it easily. Today, the app is being used on sites across Canada and the United States and even by top general contractors(承包商).

In October, Bridgit was named to the Canadian Innovation Exchange’s top 20 list of Canada’s most innovative companies working in digital media and information and communication technology .

But Ms. Hasegawa and Ms. Brodie are not resting on their glories. They have also been collecting feedback on Closeout from customers, and they’ll launch a new version in the spring. It will target not only general contractors but developers and building owners, too.

1.The two graduates invented the smartphone application to _______.

A. track construction sites and commercial builders

B. provide a communication platform to share photos

C. avoid project delay or costly repairs in construction

D. enable supervisors to take and share photos of buildings

2.The underlined word in Paragraph 7 most probably means _______?

A. keen on technology    B. weak in technology

C. addicted to technology    D. good at technology

3.According to the passage, what may contribute to the graduates’ success?

A. Investing in your strengths    B. Serving more customers

C. Innovating technology    D. Simplifying technology

4.The graduates’ future plan is to _______.

A. launch a new application in the spring

B. collect feedbacks from customers on Closeout

C. include different people in construction industry

D. target more consumers from various industries