What'smoreexcitingthanhavingafreshhotpizzadeliveredtoyourdoorHowabouthavingitbroughttoyoubyarobotThankstoDomino'sRoboticUnitorDRU，thatjustbecameareality!OnMarch8，thethree-foottallrobotdelivereditsfirstp

Question

What's more exciting than having a fresh hot pizza delivered to your door  How about having it brought to you by a robot  Thanks to Domino's Robotic Unit or DRU，that just became a reality!On March 8，the three-foot tall robot delivered its first pizza to some lucky residents in Brisbane，Australia．
　The fully autonomous DR U is the result of cooperation between Domino's Pizza Australia and Marathon Robotics．The 450-pound machine that travels at a maximum speed of 12.4 miles an hour can traverse a distance of up to 12 miles and back，before requiring a battery recharge．LIDAR，a laser-based sensor technology similar to the one used in self-driving cars，enables DRU to detect and avoid obstacles，while traditional sensors，much like those used in vacuum robots ensure its path is safe as it heads to its destination．
　The robot can fit up to ten pizzas and even has a separate cold area to accommodate drink orders．To access their food，customers have to enter the unique code provided to them by the company．This not only ensures that they pick up the right pizza，but also prevents the pies from getting stolen．
　Scientists expect additional DRU's to be ready for service in their various Queensland locations within the next six months．But don't expect these super cute robots to replace humans anytime soon．According to Domino's the DRU still needs extensive testing，which the company believes could take up to two years．
　And then there is also the issue of regulations．The public use of autonomous vehicles is still banned in most countries．But Don Meij，the CEO and Managing Director of Domino's Pizza Australia New Zealand Ltd，is not worried．He is"confident that one day DRU will become an integral part of the Domino's family．"

21．What's the function of LIDAR___
A．Recharging DRU's battery．
B．Keeping DRU free of obstacles．
C．Helping DRU find its destination．
D．Protecting DRU from bad weather．
22．What does the underlined word"accommodate"in paragraph 3 probably mean___
A．Hold．
B．Sell．
C．Heat．
D．Show．
23．What can we infer about future of DRU___
A．It will replace humans soon．
B．It will be applied worldwide．
C．It may be banned in Australia．
D．It may need some improvements．

Answer 1

21．B．理解推断题．由第二段LIDAR，a laser-based sensor technology similar to the one used in self-driving cars，enables DRU to detect and avoid obstacles，可知LIDAR技术类似于一个用于自动驾驶汽车的传感技术，确保DRU的检测和避免障碍，故选B．
22．A．词义推断题．由句意可推知，它不仅送披萨还送饮料，因此冷的地方肯定是用来储藏饮料的，故选A．
23．D．理解推断题．由倒数第二段According to Domino's the DRU still needs extensive testing，which the company believes could take up to two years，该机器人仍然需要大量的测试，公司认为可能需要长达两年，可知还有需要改进的地方，故选D．