建模时需要选择工作面。One needs to set the work plane before making model.
举一反三
- The 7P model appears before the 4P model. ( ) (3分)
- The work needs _____ in one hour.
- He _____ a model plane when I came to see him. A: was making B: is making C: makes D: made
- She_________ a model plane when she was ten. A: makes B: make C: is making D: made
- The principle of comparative advantage is derived from a highly simplistic two good/two country model. A: One good/one country model B: two good/two country model C: multiple good/multiple model D: fixed good/fixed model