Answers to Feng Zikai's childhood reading questions

Answers to Feng Zikai's childhood reading questions

From the whole article, the "thing" of "my grandmother's life" refers to sericulture. 2 the author mainly recalled those two aspects of happy life in the article: (1) silkworm falling on the floor. (2) silk making. (3) the meaning of the following words and sentences. (1) in the second paragraph, "this is really a rare pleasure once a year." the "this" refers to walking

Reading questions of my mother written by Feng Zikai
In the sixth paragraph, the author wrote about her mother twice. When the author was leaving, she first wrote about her mother's serious smile in her eyes, then about her loving smile in her mouth. Why is the order of description reversed when the author comes back from the holiday? (first about her loving smile in her mouth, then about her serious smile in her eyes.)

Because the mother attaches great importance to the children's study, and doesn't want the children to worry about their own health

The base composition of a biological nucleic acid is 58% of adenotrexate and 42% of pyrimidine
Phage a
E.coli B
C human or yeast
D tobacco

A. The base composition of an organism is: purine bases account for 58% of the total number, pyrimidine bases account for 42% of the total number. Generally, this organism cannot be a DNA virus, such as phage, hepatitis B virus, pox virus, adenovirus, herpes virus, iridovirus, etc. because the nucleic acid of DNA virus is DNA, a + G = C + T = 1 / 2

What is the central sentence of Jiang's words in the snake catcher's speech!

Who knows the poison of Fu Lian is a snake!

The second and third questions of the seventh question on page 50 of volume two of grade five
If there are 5 students in each row, there will be 2 more; if there are 6 students in each row, there will be 2 more. It is known that the number of students in class 3 of five years is between 30 and 50. How many students are there in class 3 of five years?
Question 3: Xiao Wei has a haircut every 30 days, and Xiao Ming has a haircut every 40 days. On January 1, 2009, they went to the same shop to have a haircut. How many times did they go to have a haircut this year?

If there are 5 students in each row, there will be 2 more; if there are 6 students in each row, there will be 2 more. It is known that the number of students in class 3 of five years is between 30 and 50. How many students are there in class 3 of five years?
First, find out the least common multiple (30) of 5 and 6
30 + 2 = 32
A: there are 32 students in class three in five years
Question 3: Xiao Wei has a haircut every 30 days, and Xiao Ming has a haircut every 40 days. On January 1, 2009, they went to the same shop to have a haircut. How many times did they go to have a haircut this year?
Xiao Wei has his hair cut every 30 days and Xiao Ming has his hair cut every 40 days, so they meet every 120 days. 365 days a year
365÷120≈3
A: they went to have their hair cut three times a year

(16 + x) × 2 = 44 the process of solving the equation

（16+x）×2=44
16+x=44/2
16+x=22
x=22-16
x=6

73 × 102 = simple calculation

You're welcome!

As shown in the figure, P is a point outside ⊙ o, PAB and PCD intersect with ⊙ o at a, B, C and D respectively. (1) Po bisects BPD; (2) AB = CD; (3) OE ⊥ CD, of ⊥ AB; (4) OE = of

It is proved that proposition 1 connects OA, OC, ∵ OE ⊥ CD, of ⊥ AB, ≁ AB = 2AF, CD = 2ce, ∵ OE = of, OA = OC, ∠ AFO = ∠ CEO, ≌ AFO ≌ CEO (HL), ≌ AB = CD, at the same time, △ PFO ≌ PEO, Po bisection ∠ BPD

Lianyilian: the current price of a laptop is 4500 yuan, 500 yuan lower than the original price;

As shown in the figure

It is known that the line y = KX + B passes through the point a (0, 6) and is parallel to the line y = - 2x. (1) find the value of K and B; (2) if the line passes through the point P (m, 2), find the value of m; (3) write out the analytic expression of the function representing the line OP; (4) find the area of the graph bounded by the line y = KX + B, the line OP and the X axis

(1) Because the line y = KX + B passes through the point a (0, 6), and is parallel to the line y = - 2x, so k = - 2, B = 6. (2) from (1), y = - 2x + 6, because the line passes through the point P (m, 2), then - 2m + 6 = 2, that is, M = 2. (3) let the analytic expression of the line OP be y = KX, then 2 = 2K, k = 1, that is, y = X. (4) because