1.1. Feng Yinan began studying by herself at ________.

A

B

C

D

解析：选72。72 细节理解题。根据第一段的“ At 72, she began studying for exams by herself.”可知，冯忆难72岁的时候开始自学考试。故填72。

2.2. ________ and family kept Feng Yinan busy when she was young.

A

B

C

D

解析：选Work。Work 细节理解题。根据第二段的“But work and family kept her busy. ”可知，年轻的时候她曾尝试自考，却在工作和家庭压力下放弃。故填Work。

3.3. It was not ________ for Feng Yinan to learn.

A

B

C

D

解析：选easy。easy 细节理解题。根据第二段的“It was hard for her to remember things as she aged. ”可知，自考对于一名70多岁的老人来说，记忆力衰退带来的挑战使学习变得不容易。故填easy。

4.4. Feng Yinan learns to play the ________ now.

A

B

C

D

解析：选piano。piano 细节理解题。根据第三段的“Now, she learns to play the piano through her phone and enjoys life. ”可知，她通过手机学习弹钢琴。故填piano。