Recruitment commitment

(For questions such as "which of the following is consistent with the stem of the question", "which of the following may be true" and "which of the following is not contradictory to the stem of the question", we can consider substituting the exclusion method to solve the problem)

(20 19.30) A certain unit plans to send three cadres with both ability and political integrity to the western mountainous areas for precise poverty alleviation. The applicant is very enthusiastic. After investigation, six candidates, Chen Jia, Yi Fu, Zhao Bing, Deng Ding, Liu Wu and Zhang Ji, were finally determined. According to the needs of the work, the dispatch shall also meet the following conditions:

(1) If Chen Jia is dispatched, Deng Ding is dispatched, but Zhang Ji cannot be dispatched.

(2) If Fu Yi and Zhao Bing send at least 1 person, Liu E will not send them.

Which of the following dispatching candidates does not contradict the above conditions?

A. Chen Jia, Fu Yi and Zhao Bing.

B. Zhao Bing, Deng Ding and Liu Wu.

C. Chen Jia, Zhao Bing and Liu Wu.

D. Fu Yi, Deng Ding and Liu Wu.

E. Deng Ding, Liu E and Zhang Ji.

Analysis: the stem of the question is not contradictory to the above conditions, that is, it meets the above conditions, and the substitution exclusion method can be used.

The formalization of stem condition: (1) A → D λ? I (2) b ν c →? E.

If the option A is substituted into the condition (1), you still need to assign workers, and the number exceeds 3, which does not match.

Option B is substituted into condition (2), but Party C cannot assign E, which is inconsistent.

Option C is substituted into condition (2), and sending C cannot send E, which is inconsistent.

Option D is substituted into condition (2), but Party B cannot send E, which is inconsistent.

The e option is not contradictory to the stem, but consistent with the stem, so the e option is consistent.

Tip 3: Hypothesis+Substitution and Exclusion

(If you can't directly use the substitution exclusion method, you can observe the options at the same time in the reasoning process, eliminate the wrong answers in time, avoid unnecessary reasoning, and waste too much time in solving problems, so as to quickly lock the correct answers. )

(20 19.4 1) In a talent market, four young people, A, B, C and D, applied for positions such as cleaning, property management, network management and sales. Afterwards, I learned that everyone only chooses one job to apply for, and each job has one person to apply for. In addition, I also know:

(1) If Ding applies for network management, then A applies for the property;

(2) If Party B does not apply for cleaning, then Party A applies for cleaning and Party C applies for sales;

(3) If B applies for cleaning, then C applies for sales and D also applies for cleaning.

According to the above statement, which of the following can be drawn?

A.a applies for a property position.

B.b. apply for the post of network management.

Apply for a cleaning post.

D.d. applied for a sales position.

E. Party A applies for the post of network management.

Analysis: According to the stem, one person corresponds to one post.

Then condition (3): B cleaning → C sales λ cleaning. Obviously, B can't apply for cleaning. Then according to condition (2):? B cleaning → A cleaning λ C sales. At this time, directly substitute the option. If A applies for cleaning, then A cannot apply for property or network management, excluding options A and E, and C cannot apply for cleaning, excluding option C; C applies for sales, then D cannot apply for sales, and option D is excluded; So you can only choose option B.

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