在空格上填写相应的句子序号，请按格式填写，如填写1 或者1-2 The first step：___________ The second step：_________; The third step：_________ The fourth step：_________
举一反三
- 中国大学MOOC: In Discussion the first step is introducing ideas and the second step is ________
- There four steps of bar services you should remember, the first step is to__________, the second step is to__________, next is to __________and the last step __________.
- In _____, you organize the support in a paragraph. A: Step 1 B: Step 2 C: Step 3 D: Step 4
- 中国大学MOOC: There four steps of bar services you should remember, the first step is to__________, the second step is to show to the guest, next is to __________and the last step __________.
- What number in the above diagram represents when crossing over takes place? A: step 1 B: step 2 C: step 3 D: step 4