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【单选题】
Why do we model?A.
Helps to visualize a system
B.
Gives us a template for constructing a system
C.
Documents our decisions
D.
All of the above
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举一反三
【简答题】用竖式计算．（带☆的要验算） 357÷17= 765÷18= 680×50=
【简答题】Paragraph 1 Paragraph 2 Paragraph 3 Paragraph 4 Paragraph 5 a. Inspection in production process b. Inspection at local restaurants c. Inspection at retailer locations d. Definition of food safety insp...
【简答题】直接写得数． 15×6= 85÷5= 400÷20= 18×4= 160×3= 680÷2=
【单选题】Speaker A:Look, this is the Eiffel Tower. When was it built? Speaker B:_______________________
A.
It was built more than 100 years ago.
B.
It was 100 meters high.
C.
Both A and B
【简答题】比较大小，在横线里填上“＞”、“＜”或“=” 70700______70070 18×24______（18×2）×（24÷2） 680÷170______680÷17．
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