It would be a shallow kind of optimism to assume that the introd

It would be a shallow kind of optimism to assume that the introduction of the art of inventing has been as immediate and unmixed blessing to mankind.
A、It would be a shallow kind of optimism to believe that the introduction of the— art of inventing has directly benefited only mankind.
B、It would be a shallow kind of optimism to believe that the introduction — of the art of inventing has benefited mankind directly.
C、It would be a shallow kind of optimism to think that the introduction of the art of inventing has blessed mankind immediately and blessed only mankind.
D、It would be a shallow kind optimism to believe that the introduction of the art of inventing has benefited mankind directly and brought them only benefit.
【正确答案】：D
【题目解析】：此题是考查对句意的理解。根据句意，认为艺术发明会给人类带来直接利益并且对人类没有任何副作用，这是一种盲目的乐观。选项A和C都认为艺术发明只对人类有益，此与题意不符，因此不正确。选项B表述不完整，唯独只有选项D符合题意。答案为D。