The Race of the Robots
The robotics competition was taking place. Lily and Toby followed their two other teammates, David and Marcus, into the big hall. They laid out all their equipment on the table because the rules said the robot could not be assembled (组装) before the competition. They needed to build and program a robot that could make its way around an obstacle (障碍) course. It was said that judges often gave a surprise___13___change that would require the students to change their robotic design at the last minute.
“Teams, it is now time for the new rule,” the host announced. “Some rocks will be placed on the course. You will have to make your robot remove them from the course.”
“We can build an arm to pick up the rocks and___14___them on the side,” said David right away. “But that would take too much time,” Marcus replied.
The team stood in___15___, each trying to think up new ideas. Toby thought hard about the design they had already planned out. Then he realized something special about their design — the secret box.
“How about we create a door in the front of the___16___space in the center of the robot? We can add a sensor (传感器) to the door. So when our robot goes along and comes across those rocks, it will open the door and pick them up,” he explained.
The team thought about it. “Actually, that might work. The fact that the robot is___17___these things rather than just moving them might give us extra points,” Lily said.
The four set to work,___18___but quickly assembling their pre-designed robot, then adding the door with the extra parts they had brought. It was hard, and time was running out. As the buzzer (计时器) rang, Toby placed the last part on the robot.
It was time for Toby’s team to compete. They set their robot on the course and watched it make its way and meet the first rock. It stopped for a second, and the members of the team___19___their breath. Then the machine opened its door and slid (滑行) across the small rock. When it passed over the rock, the rock disappeared —___20___in the robot’s secret box. The team cheered, knowing they were one step closer to the championship.
13. A. speed B. team C. time D. rule
14. A. design B. change C. place D. break
15. A. silence B. disbelief C. anger D. loneliness
16. A. empty B. natural C. bright D. common
17. A. pushing B. jumping C. collecting D. searching
18. A. directly B. carefully C. bravely D. freely
19. A. stole B. saved C. got D. held
20. A. separated B. hidden C. dropped D. cleaned
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