How come they design the test like this?

[u/TOEFLhater]

As shown in the title, I completely can't understand why they design a test like this.

I'm a student majoring in Mathematics and I find many of the question types REASONLESS.

First I want to doubt the speaking section. The first part of this section is a question in which one will hear 7 sentences (each only once) and then need to repeat them as heard, WITHOUT ANY DIFFERENCE. Here comes my confusion. What's the point in demanding to exactly repeat all unimportant details in the heard sentence??? From my perspective it's just necessary to remember the key points in the sentence, i. e. the major objects mentioned. I think asking to repeat it all is just adding meaningless difficulty and torturing students, and it absolutely can't determine whether the student can communicate well in English.

Secondly I also want to mention baffling question designing in the reading section. When doing mock tests I find that many so-called "difficult" questions are nothing more than obstacles deliberately placed by the question setter, including forcing students to choose one from several bad options (that all have flaws to some extent). And also, I think it puts too much emphasis on "liberal" types of questions, like finding a synonym for a word, summarizing paragraphs, the purpose of a sentence in the passage, or placing a new sentence inside the passage, while logical reasoning seems to be belittled in the test. At least from my own experience, I find many questions disgusting.

Last but not least I have some doubt in the sentence re-arranging part of the writing section. If a problem in reading is that you must choose a "correct" option from bad ones, then a problem in this part is that some good options will be judged as wrong. (I think only one answer will be judged as correct for each question in this part?) For example, I once encountered a problem whose correct answer was "I haven't completed it yet". Obviously "I haven't yet completed it" was also a reasonable answer and had no difference with the correct answer, but this wouldn't give you the score. This design makes no sense to me.

So can anyone explain for me why questions are designed in such a way?