问题
选择题
He trained hard in puzzle-guessing, a sort of children’s game, all year, _____ still failed to reach his best form in all the tests given to both adults and children.
A．Then
B．Thus
C．Therefore
D．Yet
答案
答案：D
连词辨析。 A.那么，然后 B.因此，从而；C.因此，所以； D.但是，然而。句意：他整年刻苦练习猜谜游戏，一种儿童游戏，但是在所有给大人和孩子们的测试中他仍旧没有达到最佳状态。前后为转折关系，故选D。