三、克漏字測驗【請依照段落上下文意，選出最適當的答案】
 第一篇：
         In a span of five years, autonomous driving has gone from “maybe possible” to “inevitable” to “   31   .” InDecember 2018, Waymo officially started its robot-car paid service in the suburbs of Phoenix, Arizona. The details of theprogram—open only to a few hundred test riders, and with human safety operators remaining behind the wheel—may benot that   32    but don’t erase its significance. In this 21st-century gold rush, Waymo’s onetime monopoly has soonevaporated. Other   33    startups are running small-scale but revenue-generating shuttle services. Every majorautomaker is pursuing the driverless tech, eager to rebuild itself as “   34   .” Ride-hailing companies like Uber are alsorushing to  35    the costly human drivers, while tech giants like Apple and Intel are looking to carve off their slice ofthe pie and fill niches in this burgeoning ecosystem.
【題組】31.
(A) simply impossible
(B) totally refundable
(C) barely profitable
(D) commercially available