雅思听力材料中关键的标点符号

.   period
,   comma
:   colon
;   semicolon
!   exclamation
?   question mark
-   hyphen
’   apostrophe
_   dash
‘’   single quotation marks
“”double quotation marks
( )  parenthesis
[ ]  square brackets
...  ellipsis
~   swung dash
§  section; division
→  arrow
+   plus
-   minus
±  plus or minus
×  is multiplied by
÷  is divided by
=   is equal to
≠  is not equal to