The author of poem When You Are Old is ( ). A: Maud Down B: Maud Gonne C: Maud Anne D: William Butler Yeats

The author of poem When You Are Old is ( ). He is regarded by many as Ireland’s greatest ever poet. A: Maud Anne B: William Butler Yeats C: Maud Gonne D: Maud Down

I like Betty and Maud, but I think Betty is ____(nice) of the two.

His parents, Luther and Maud Powell, (3)______to the United States from Jamaica.

I like Betty and Maud, but I think Betty’s ______ of the two. A: so nice B: the nicest C: nice D: the nicer

提出锁钥假说的科学家是______。 A: Pehr Edman B: Leonor Michaelis and Maud Menten C: Daniel Ｅ. Koshland D: Emil Fischer