阅读下面短文，从短文后的五个选项中选出能填入空白处的最佳选项。每个选项只能用一次。
Don’t be too surprised if you see a car going down the road without a driver in Beijing these days. 109．Last month, Baidu began to test its self-driving cars on open roads in Beijing.
110．Since then, companies like Tesla, Uber and Baidu have been working to produce and test their own self-driving cars.
Self-driving cars are safer than regular cars. 111．They can remove the stress of driving and allow disabled or blind people to get around more easily.
112．In one test, researchers pointed a laser pointer(激光棒) at the car's sensors(传感器) while it was moving. The car mistakenly thought that the laser beam was in its way and slowed down or changed the direction.
The software that is used to direct the cars may not be safe enough. 113．When we use our computers or smartphones, they sometimes crash (崩溃)  without any reason. But if this happened to a self-driving car, the results could be deadly. Improvements to the software could be a solution to this problem.
A．At times, it may break down.
B．Self-driving cars began to develop in 2010.
C．It might be one of Baidu’s self-driving cars.
D．But self-driving cars have their own problems as well.
E.And they are more environmentally friendly than regular cars.
 
这篇短文给我们介绍的是自动驾驶汽车，这种汽车里安装有软件，可以指导汽车的运行。与普通汽车相比，它有很多的好处，如更加安全、环保、让残疾人可以更加轻松地四处活动等。但同时它也有它的不足之处。
109．C【解析】句意：它可能是百度的一辆自动驾驶汽车。根据下句话Last month, Baidu began to test its self-driving cars on open roads in Beijing.可知，上个月百度开始在北京的开放道路上测试其自动驾驶汽车。由此可知，前一句话提到的you see a car going down the road without a driver in Beijing指的就是百度的自动驾驶汽车，故应选C。
110．B【解析】句意：自动驾驶汽车是在2010年开始发展的。根据下句话Since then, companies like Tesla, Uber and Baidu have been working to produce and test their own self-driving cars.可知，Since then表示从那以后，所以我们这个空应介绍自动驾驶汽车的起源，故应选B。
111．E【解析】句意：而且他们比普通的汽车更加的环保。根据上句话Self-driving cars are safer than regular cars.可知，这里介绍的是自动驾驶汽车比普通汽车的优势，故应选E。
112．D【解析】句意：但是自动驾驶汽车也有它的缺点。根据下面的文意尤其是The car mistakenly thought that…可知，这里介绍了自动驾驶汽车的不足之处，故应选D。
113．A【解析】句意：有时候它可能会出故障。根据上句话The software that is used to direct the cars may not be safe enough.可知，这里说的是“用于引导汽车的软件可能不够安全”；下文提到When we use our computers or smartphones, they sometimes crash (崩溃)  without any reason. But if this happened to a self-driving car, the results could be deadly.，我们的手机或者电脑有时候会崩溃，这对于自动驾驶汽车来说是致命的，所以自动驾驶汽车也可能会出故障，故这里应选A。
【点睛】
这篇短文给我们介绍了一个科技新发明—自动驾驶汽车，包括它目前的研究情况、它的优点和缺点等。文章是科普说明文，在文意的理解上有一定的难度，阅读时应注意把握文章和每一段的中心，注意首尾句。题型是选择句子补全短文，文章后有五个选择项，我们需要把他们放在短文中适当的位置。做题时，应先通读短文，了解文章大意；然后阅读所给的选项，弄清楚他们的意思，并根据文意，把他们放到原文中去。注意不用按照题目顺序做题，先解决简单的、明显的，最后处理难的，因为选项与空格是一对一的，所以当简单的题做出来的时候，难题的难度也会降低。例如第3小题，这个题目相对比较简单一些，空前的这句话对比了自动驾驶汽车和普通汽车，这句话是顺应上文而来的，继续对比两种汽车，说明自动驾驶汽车的优点，所以应选E，这句话与上句话的句式也是一样的。根据文意结构可知，到第4题和第5题这两段里，讲述的是自动驾驶汽车的缺点了，所以这两个选项应围绕这一主题进行选择，如第4小题，这里与上文就是一个转折的关系，故应选D。