Listening 4 More ideas
Steve, Harry and Greg are now joined by Maria, Anna, Linda and Julia.
Listen and write down who says which.
[音频]/module/audioplay.html?objectid=9afd99b7ab159df4c283c7b8c97508db9afd99b7ab159df4c283c7b8c97508db
Steve, Harry and Greg are now joined by Maria, Anna, Linda and Julia.
Listen and write down who says which.
[音频]/module/audioplay.html?objectid=9afd99b7ab159df4c283c7b8c97508db9afd99b7ab159df4c283c7b8c97508db
举一反三
- 写一个文法G,使其语言为不以0开头的偶数集。 A: G[S]:S→AB|BA→AD|CB→2|4|6|8｜0C→1|3|5||7|9|B B: G[S]:S→AB|BA→AD|CB→1|2|3|4|5|6|7|8|9C→2|4|6|8｜0 C: G[S]:S→AB|BA→AD|CB→2|4|6|8｜0C→1|2|3|4|5|6|7|8|9D→0|C D: G[S]:S→AB|BA→AD|DB→2|4|6|8｜0D→1|2|3|4|5|6|7|8|9|0
- 【计算题】5 ×8= 6×4= 7×7= 9×5= 2×3= 9 ×2= 8×9= 7×8= 5×5= 4×3= 5+8= 6 ×6= 3×7= 4×8= 9×3= 1 ×2= 9×9= 6×8= 8×0= 4×7=
- [音频] *4 | 3 | 升4 | 3 | -7 |/module/audioplay.html?objectid=09ca46dda9b5733db6d969021c7ed98a
- “9、9、7、4、7、8、9、2、4、5、4”的中位数是（）。
- 6 | *4 | *1 | -7 | 升4 | —5 | [音频]/module/audioplay.html?objectid=618a312e23f0522b32362879803a6753