课文填空

Did you know that tea, the most popular drink in the world (after water), was invented by __________? Although tea wasn’t brought to the Western world _________ 1610, this beverage was __________ over three thousand years before that. __________ to an ancient Chinese legend, the emperor Shen Nong discovered tea when he was _________ drinking water __________ an open fire. Some __________ from a nearby bush fell into the water and __________ there for some time. The emperor noticed that leaves in the water produced a pleasant __________. Later he decided to taste the hot mixture. It was quite delicious. And _________ this way, one of the world’s favorite drinks was invented.

下列关于债权转让的规定，说法错误的是( )。

A．债权转让后合同主体改变

B．债权人转让债权应当经过债务人同意

C．债权人转让权利的，受让人取得与债权有关的不属于债权人自身的从权利

D．债权人可以将合同的权利全部转让给第三人