先说图意，再列式计算。

阅读理解

    Joe and Jack are talking about the year 2020．Joe asks。“What will our world be like in the year 20207” “I don't know, ”says Jack．“What do you think?” No one knows．but it's interesting to guess, ” Joe says．“In the year 2020, everyone will have a pocket computer．The computer will give people the answers to all their problems．We will all have phones in our pocket,  too．And we'll be able to talk to our friends ail over the world．”“A lot of people will live and work under the sea．Perhaps there will be big towns , factories and farms under the sea,  too．”“Machines will do most of the work , so people will have more holidays , and perhaps they'll work only two or three days a week．They'll be able to fly to the moon by spaceship and spend their holidays there．I'm looking forward to the year 2020．I hope to go to the moon!” But I hope I'11 be able to live under the sea, just like a fish!” says Jack．

清晨室外花叶上有许多露珠，露珠下面的叶脉看起来比较粗大，这是露珠产生____镜的功能，形成叶脉的____（填“实”或“虚”）像．

京津冀地区位于环渤海地区的中心位置，是国家经济发展的重要引擎和参与国际竞争合作的先导区域，京津冀协同发展是重大国家战略。下图为“京津冀产业特征及联系示意图”。读图，回答下列各题。