So far a total of 19 cases and another 36 people are being treated on the assump
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So far a total of 19 cases______ andanother 36 people are being treated on the assumption that they are infectedwith Legionnaires Disease.
| A．were confirmed | B．have confirmed | C．are confirmed | D．have been confirmed |
试题答案
【答案】
D
【解析】考查时态语态。So far与现在完成时连用，排除AC。句意：到目前为止一共19个案例已经被确认了，另外36个人正在被治疗。故应该使用被动语态。D正确。