"Wow, you're geniuses, evenly distributed."

Xu Jianren was too lazy to ask, and the accuracy rate plummeted to 24% in an instant, what is the best class of students, it is all deceptive nonsense!

"Why are there many more choices?"

"The two fat and thin boys by the window, do you engage in a household contract responsibility system? One for AC and one for BD? ”

Chen Bo didn't dare to talk at all, squeezed out a disobedient smile, and begged the teacher to let him go.

Wang Xu was stunned like a piece of wood, and his face was expressionless.

Xu Jianren's firepower didn't stay too long, and turned to output another male classmate.

"The boy in the last row, what's going on? Didn't ABCD take a fancy to it? Why don't you choose any of them? ”

"I thought about it for too long, I forgot to press it." The other party said weakly.

"The first half of the question, 'I am not morally responsible for my actions unless I can make another choice,' is easy to judge from the meaning of the sentence that this is a necessary hypothetical proposition."

"What is a necessary hypothetical proposition?" Chen Bo turned his head and asked in a low voice.

"I just remember that it is necessary to push back and forward, and it is sufficient to push forward and backward." Wang Xu's mantra was so simple that Chen Bo was still confused after listening to it.

Too lazy to open the toolbar to find it, Xu Jianren simply drew an ugly ellipse directly on the touchpad with his fingers.

"Being morally responsible for my actions→ I can make a choice, that's fine."

Seeing that no one was suspicious, Xu Jianren continued: "Let's look at option A first, I am morally responsible for my actions→ I can make a choice, which is exactly the same as judgment." ”

"Option B, I was able to make a choice→ I was morally responsible for my actions, and the other way around, so it was wrong."

A bold student raised his hand and said, "Teacher, I don't understand, why is it wrong to do the opposite?" ”

"Did you learn what it takes? If the latter does not happen, the former must not happen, and the characteristic is that it cannot be done without it, and it may not be possible to have it, unless the question stem is a sufficient and necessary condition. ”

"Teacher, I don't read much." The classmates don't seem to understand.

"If you want me to give an example, it's hard for me to die."

Xu Jianren rubbed the beads of sweat on his forehead, and said with a flash of inspiration: "If you don't understand, listen carefully, let me put it another way, unless the jungler helps me, I will blow up, this is a necessary hypothesis, the logical relationship is not to blow up the line→ jungler help me." ”

"Is there a problem here, and some of them should be mentioned quickly."

After being silent for a few seconds, Xu Jianren said by analogy: "Changing the meaning of option B into it, it is the jungler to help me → not blow up the line, it looks fine." ”

"But think about it, generally people who say this kind of thing, nine times out of ten, are rookies, even if the jungler gangs, they will lose their advantage over the tower, and they will be squatted by the opposite jungler brainlessly, even if he has a hundred fathers, he will have a hundred and one ways to blow himself up on the spot."

"Again, if you don't bomb the lane, it means that there must be a jungler gang, and the jungler gang doesn't necessarily not want to bomb the lane, do you understand if I explain it like this?"

"Understood, understood, teacher." The confused classmate from earlier smiled pleasantly and took the lead in applauding.

"What an example."

Chen Bo listened to this is indeed the case, and the logical relationship of the tongue-twisting was explained by Xu Jianren in a few words, and he is worthy of being a joker in Qiu Mingshan.

Xu Jianren took a sip of water and found the broken rhythm, "Where did you just talk about it?" Oh, and now that the AB option has been spoken, let's focus on the second half of the stem, which is a sufficiently conditional hypothetical proposition, which is pushed forward and backward. ”

"Inability to avoid a certain behavior should not → be morally responsible, it is worth noting that there is a full stop between the two sentences, and from the logical relationship, there is no transitivity between propositions."

"Okay, going back to the options, option C is to avoid a certain behavior → he is morally responsible for that behavior, and option D is to be able to make a choice about the behavior → certain behavior can be avoided."

"The sufficient feature is that the former happens, the latter must happen, there is another way, it doesn't necessarily work without it, it's just the opposite of the necessary, so the logical derivation chain of C is wrong, and in the same way D is the logical transmission, so it is not chosen."

"Solved this problem, did you do the wrong thing before? No, I'll send you a hundred simulations after class. Xu Jianren asked the classmates kindly.

Chen Bo muttered: "How dare you raise your hand, the gift package is waiting for you." ”

"Time is running out, let's finish the last question."

Xu Jianren and others have to accumulate materials for students who have not taken the exam, and they are irritable when they think about it, the knowledge points are vast, and it is not appropriate to talk about anything, and it is stressful to prepare for classes extensively, so they can only introduce some ways and methods to help the scumbags find shortcuts.

The management of the city's water network is a difficult problem, and there is no other way to find problems in the city's water network through the personal experience of the plumbers or their field investigations.

Based on the above information, we can determine:

A. Without plumbers, workers will not be able to detect problems with the city's water network

B. It is impossible to identify problems with the city's water network without conducting field investigations

C. The personal experience judgment of the plumber is sufficient to detect problems in the city's water network

D. Conduct field surveys to identify problems with the city's water network

"The teacher's conscience found that after class, it is simple to improve self-confidence, and there is definitely no trap in choosing A for this question." Chen Bo didn't confirm the answer with Wang Xu, and locked A in seconds.

"Tut-tut, beware of being in the minority." Wang Xu took a second look and found that there was indeed no trap, so he boldly chose A.

Seeing that the accuracy rate rose to the initial 100%, Xu Jianren's eyebrows gradually improved.

"Finally, the selection will be integrated, very good, very good."

"It doesn't matter if you don't understand the logical derivation of this reason, you can easily get the answer from the literal meaning, if you want to find the problem of the urban water network, you can only judge through the experience of workers or field investigation, and finally add that there is no other way."

"A is right, I won't go into the reasons here, B's statement is inappropriate, and the water network problem can be found through personal experience, not necessarily through field investigation."

"C and D are the same type of questions, although the question stem uses or, but both options have absolute wording 'sufficient' and 'just', which is too absolute, in other words, specific problems need to be analyzed in detail, and sometimes it is necessary to combine the two methods to find out whether there is really a problem in the urban water network."

"This is only from the literal translation, it can be seen that if you do not master the correct way and method, there is still a certain degree of difficulty in solving the problem, I hope that the students will go back after class to study logic seriously, and figure out the various relationships, so as to learn at a deeper level."

"I'm curious about how difficult the exam is?" Chen Bo held his head with one hand and placed the other hand on top of the options button.

"There is a logical degree of ordering, there are combination choices, there are indefinite items, there are definitions to fill in the blanks, and I have also seen options according to the requirements of the question stem."

"What the hell? Do you make your own ABCD? ”

Wang Xu nodded and said: "Yes, for example, it will ask for an irrelevant non-error option, an associated weak logic option, an appearance option, and a correct option, and then you have to complete the vacant options according to your needs." ”

"I...."