【题目】He continued his writing until 1990 when a worsening eye condition ______ the end of his active career.
A.signedB.signaledC.consideredD.communicated
在线课程【答案】A
【解析】
考查动词词义辨析。句意：他继续写作，直到1990年，眼疾恶化标志着他积极的职业生涯的结束。A. signed标志；B. signaled以动作向……示意；C. considered考虑；D. communicated交流。根据语境，故选A。