一般来说，在家庭中你所享受到的深沉严格的爱来自 [ ]
A．母爱
B．父爱
C．兄弟姐妹间的爱
D．爷爷奶奶外公外婆的爱
答案：B
—Dad, do you like my picture?
— ________! It's the nicest one I've ever seen! [ ]
A. What beautiful
B. How careful
C. How wonderful
D. What wonderful picture
试述子宫内膜的周期性变化过程
