Finding a solution to this problem is one of the greatest ________ faced by scientists today. A. difficultiesB. difficultyC. difficultD. difficiency
Finding a solution to this problem is one of the greatest ________ faced by scientists today.
A. difficulties
B. difficulty
C. difficult
D. difficiency
相关考题：
She returned home from the office , only ()the door open and something() .A. finding ; missedB. to find; missedC. to find ; missingD. finding ; losing
All known techniques for handling complex problems successfully seem to fall into one of the three classes: subdividing the problem(51), ignoring irrelevant detail in a safe way(52), and having an independent agent(53)the internal consistency(contextual checking). The first two provide guidelines for solving the problem, the third serves to provide early warnings. A good programming language supports all three.In subdividing problem, some of the subproblems may be similar to the(54) problem. It leads us to a(55)solution. This(55)solution is viable provided each of the subproblems is easier to solve than the original problem.A．abrogationB．abstractionC．compositionD．contraction
Mary is looking for the book she lost yesterday.A:trying to find B:looking up C:looking at D:finding
There was an inclination to treat geography as a less important subject.A:tendency B:pointC:result D:finding
There was an inclination to treat geography as a less important subject.A:point B:tendencyC:result D:finding
4Ps营销策略组合理论，包括了A．产品（Product）、定价（Price）、渠道（Place）、促销（Promotion），再加上策略（Strategy）B．产品（Product）、定价（Price）、渠道（Place）、促销（Promotion），再加上决策（solution）C．产品（Product）、定价（Price）、渠道（Place）、问题（Problem），再加上策略（Strategy）D．定价（Price）、渠道（Place）、促销（Promotion），再加上强化（Strength）
【单选题】4Ps营销策略组合理论,包括了（)。A．产品(Product)、定价(Price)、渠道(Place)、促销(Promotion),再加上策略(Strategy)B．产品(Product)、定价(Price)、渠道(Place)、促销(Promotion),再加上决策(solution)C．产品(Product)、定价(Price)、渠道(Place)、问题(Problem),再加上策略(Strategy)D．定价(Price)、渠道(Place)、促销(Promotion),再加上强化(Strength)