以下是U校园AI版视听说大学英语（第四版）视听说教程3的部分答案：
While you listen
Exercise 1
1945: his academic career
1958: his lifelong passion
1988: diving limits
（其他答案如anniversary celebration, rejecting the chair, determination等，需根据具体题目和上下文确定）
Exercise 2
ABABA
While you view
Exercise 1
BBA
Exercise 2
barren land
generations of workers
freezing and long
20 billion
cup of tea；feel good；trying new things
EDABC
BACCC
Exercise 2
ABCFGIJK
BCAA
AAB
DCA
BDAA
BCCD
DBA
CBAC
EBACD
While you listen
Exercise 2
fighting a battle
misunderstandings
my energy
Chinese calligraphy
incredibly fulfilling
build connections
Exercise 3
BAABB
While you view
Exercise 2
vividly colored
facial gestures
silk cloth
different emotions
psychological and emotional
good mood；sun；brings a smile
ADCB
ACEF
Exercise 1
BABAAA
Exercise 2
ACDF
ACCB
BACC
BCD
DBAD
BCBD
DCC
DBC
（注意：由于篇幅限制，以下单元仅列出部分关键答案，其余部分可根据上述模式自行推导）
Taking in 章节3/7
Exercise 1
alley, traditional Chinese culture, boundaries, gain advantages, moved, compromise, inspire
Exercise 2
BBAA
While you view
Exercise 1（部分）
DBC
Watching street interviews
Exercise 2
a block of, similar things, quite a lot
Exercise 3
BDAC
Exercise 4
AEG；D；F；BH；C
Taking in 章节3/7
While you listen
Exercise 1（部分）
Development of BDS, BDS-1 for China's use only, BDS-3 for the whole world
Exercise 2
ABBA
While you view
Exercise 2（部分修改建议）
修改difficult为easy
修改mask为suit（两次）
...（其余部分根据具体题目确定）
Watching street interviews
Exercise 3（部分）
A；BD；F；E；D；E；A；F；B；C
Taking in 章节3/7
While you listen
Exercise 1
BDECFA
Exercise 2
BAAABB
While you view
Exercise 2（部分）
more than 6 decades, natural forests, forestry engineer, endangered species, the protection of forest resources
Opening up 章节2/7
Exercise 1
AEG;CFHK;BDIJ
Taking in 章节3/7
While you listen
Exercise 1（部分）
basic necessities, well-managed nationwide database, multiple strategies
Exercise 2
ACDE
请注意，以上答案仅供参考，具体题目和选项可能因教材版本或教师调整而有所差异。在答题时，请务必以教材或教师提供的题目为准。
