Find a master to help you do the next question, and the little brother is grateful 20

The first five aabad

A day and a night are a day. In China, there are long records of dividing the day and night into several periods. For example, in the time of Yin Wuding, the day and night were divided into eight sections, the Zujia period was divided into ten sections, and the Zhou Dynasty was divided into twelve sections, each of which had a name.

Judging from the name, the segmentation is based on the sky and daily activities, such as dan, morning, morning and morning at sunrise, and evening, twilight, dusk and evening when the sun rises; When the sun is in the middle of the day, it is called the middle of the day, the middle of the day is called the middle of the day, the sun is called the west oblique day, and so on. The ancients had two meals a day, and the morning food was after sunrise and before the corner, and this time was called food time or flea food; The eclipse is after the sunset and before the sunset, and this period of time is called the time of the sunset. After the sunrise comes twilight, and after dusk is the determination of man; After the person is determined to be in the middle of the night, after the middle of the night is the rooster crow and the madan (also known as the cool or pingdan or pingming).

When we understand these, we will understand the ancient books such as "The Female Says the Rooster Crows, and the Scholars Say the Strange Dan" ("The Book of Songs, Zheng Feng, The Female Says the Rooster Cries"), and the Lonely Man Sets the Beginning" (the ancient poem "The Peacock Flies Southeast").

It's a bit of a stretch to be done.

I can only guarantee the accuracy rate.

10. a

From the logarithmic function to the increasing function, it is easy to know a; 1;;;1) The first piecewise function of fingerprint Kai is a one-time function, which can be known as 3-a; 0,then a3;;; 2) Substituting the value of the first function at x=1 and the second function at x=1, it can be seen from the increasing function that 3-a-4a=loga(1)=0 is a; =3/5,;;3) Take the union set of (1), (2), and (3), and we can know that d is correct. Note: For the increase or decrease of piecewise functions, the size of the values of each piecewise function must be discussed at the discontinuity point.

It is easy to ignore the fact that equation (3) is obtained depending on whether it is an increase or a subtraction.

There is a problem with the question of 4 questions, since the number of people and tasks are twice that of girls, the boys moved 60 yuan each, and the girls moved 40 yuan each, how to count the boys should also complete the task. Because as long as each boy moves 40 bricks, he can twice as many as girls, because the number of people and tasks are twice that of girls.

If there are 5 natural numbers in a row, and there are exactly 4 zeros at the end, then at least 4 5's and 4 2 should be decomposed from the 5 numbers

Then you must take the first 625 of the trap, 625 = 5 4 and 4 2 in 624

There are only these four cases.

Question 1: Choose D

Reason: will Here means that it will be completed in the future, will do Question 2: Choose C

The meaning after the sentence but is "but I don't know if he wrote it or not", so, the speaker's consciousness is that he and she know that he has been writing this autobiography for the last year. So use the past continuous tense. Exclude b and d in the perfect tense and a in the past tense.

I haven't read English for a long time, and I'm not sure of the answer, but both of these questions are in a subjunctive mood, and the answer should be a, b

Didn't you learn from the overlord?

1:y=40x+3200

2:y=36x+3600

3: 1 is cost-effective when x 100, when x=100, both are the same, and when x 100, 2 is cost-effective.

I go, I don't understand this, I know more than thirty or forty points in mathematics all year round.