|
1
|
|
|
|
No 40 (Ex. 2)
|
|
|
9 位听众
|
|
2
|
|
|
|
No 41 (Ex. 4)
|
|
|
8 位听众
|
|
3
|
|
|
|
No 61 (Ex. 2)
|
|
|
4 位听众
|
|
4
|
|
|
|
Sentences and phrases, getting around
|
|
|
1 位听众
|
|
5
|
|
|
|
The Verb Estar (to be), present tense
|
|
|
1 位听众
|
|
6
|
|
|
|
No 62 (Ex. 10)
|
|
|
1 位听众
|
|
7
|
|
|
|
Miscellaneous Adventures in Sound - Demonstrations in Physics
|
|
|
1 位听众
|
|
8
|
|
|
|
Adding and Subtracting Rational Expressions
|
|
|
1 位听众
|
