They sat in silence, _______ their brains for an answer to the problem.
A: crushing
B: smashing
C: cracking
D: racking
A: crushing
B: smashing
C: cracking
D: racking
举一反三
- She sat there quietly, turning ____ the problem. A: aside B: down C: ove D: from
- She sat there quietly, turning ____ the problem. A: up B: aside C: ove D: away
- The first step in the four-step model of business problem solving is: A: outlining the problem's causes. B: agreeing that a problem exists. C: assigning the problem to a problem solver. D: identifying the problem.
- Think of your problem as a ________then it becomes less of a problem.
- The duality of a dual problem is not necessarily the primal problem. ( ）