The plan to use existing resources was considered the __________ solution.
举一反三
- The SPSE essay discusses a situation and a problem and then proposes a solution and a(an) ___________ of the solution.
- Transporting the trash to the rural areas is considered as______. A: an effective solution B: a costly solution C: a dangerous solution D: a feasible solution
- Let A be a [img=41x19]1803c4e38325ee9.png[/img] matrix, then ________. A: If Ax=0 has only trivial solution, then Ax=b must have a unique solution. B: If Ax=0 has a nontrivial solution, then Ax=b must have infinitely many solutions. C: If Ax=b has a unique solution, then Ax=0 must have a unique solution. D: If Ax=0 has a nontrivial solution, then [img=55x23]1803c4e38c0c9df.png[/img] must have a nontrivial solution.
- Things from Earth that people use are ___________. A: animal resources B: human resources C: natural resources
- 3. A clear goal and a detailed plan helps you ______. A: make better use of time B: engage in more activities C: obtain more resources D: develop better common sense