You have your choice of three（）of ice cream.

单项选择题He gave us a good（）of his experience.

A.demonstration
B.frequency
C.description
D.instruction

单项选择题This mountain range has many high（）and fertile valleys.

A.peaks
B.hills
C.phases
D.pink

单项选择题His proposal is（）to all of us and you do not need to tell us more about it.

A.apparent
B.appearing
C.approaching
D.apart