单选题 The French pianist who had been praised very highly ______ to be a great disappointment.
A. turned up
B. turned in
C. turned out
D. turned down

【正确答案】 C

【答案解析】[解析] turn up意为“找到，出现，突然发生”；turn in意为“上缴，出卖”；turn out意为“制造，生产，驱逐”；turn down意为“拒绝”。根据本句句意，本题答案为C。