My mother is as clever as a fox

My mother is as clever as a fox

"Fox" is a derogatory word, which is not suitable for "smart"
My mother is as cunning as a fox
My mother is very clever

My mother is a teacher

My mother is a respectable teacher

Revise the wrong sentence
The following is a fragment of a student's composition. Read it carefully and revise the improper parts with the prescribed correction symbols (6 points)
(1) Replacement number: (2) supplement number: (3) deletion number:
(4) Recovery number: (5) adjustment number: (6) blank number:
① Zhang Qiang studies hard, but he is good at using his brain
In the morning, he took the time to read Chinese and recite English all the year round. ③ he always recited the texts required by the teacher. ④ in the evening, he often did a lot of mathematical and chemical exercises, so the general questions were not difficult for him. ⑤ he always finished the assignments carefully, and he was not careless at all, He often helped his classmates overcome their difficulties in study and never made any trouble. Once he made up for a sick classmate and didn't go home until ten o'clock in the evening
⑧ Hard work in exchange for gratifying harvest, his results in the top spear in the class. Teachers and students praised him as a studious, studious and outstanding student

① Zhang Qiang studies hard, but he is good at using his brain
In the morning, he took the time to read Chinese and recite English all the year round. ③ he always recited the texts that the teacher asked him to recite. ④ in the evening, he often did a lot of mathematical and chemical exercises, so the general problems couldn't defeat him. ⑤ he always finished the homework carefully, and didn't do it carelessly. ⑥ when he encountered difficult problems, he was not ashamed to ask the teacher, He often helped his classmates overcome their learning difficulties and never made any trouble. Once he made up a missed lesson for a sick classmate and didn't go home until ten o'clock in the evening. His hard work brought him gratifying results. His grades ranked first in the class. Both teachers and students praised him as a studious, studious and excellent student
① "But good at using brain" should be changed to "good at using brain"
② "So study very hard" should be changed to "because study very hard"
⑤ It's not careless at all to do homework
⑥ The shameful question in
or
① Zhang Qiang not only studies hard, but also is good at using his brain. ② he studies very hard. In the morning, he seizes the time to read Chinese and recite English. All year round, he never stops, so his grades improve very quickly
③ (4) in the evening, he often does a lot of mathematical and chemical exercises, so the general questions are not difficult for him. (5) he always completes the homework assigned by the teacher seriously, and does not do it carelessly at all. (6) when encountering difficult problems, he goes after the root and asks the teacher until he understands them. (7) he often helps students overcome their learning difficulties, Never make trouble. Once I made up for a sick classmate and didn't go home until ten o'clock in the evening
⑧ Hard work in exchange for gratifying harvest, his results in the top spear in the class. Teachers and students praised him as a studious, studious and outstanding student

My mother often understands my study situation in detail and modifies my sick sentences

Improper word order
My mother often knows about my study in detail

If the equation MX ^ 2 - (3m + 2) x + 2m + 2 = 0 has two integer roots, find the value of integer M

Let two integer roots be x1, X2, then X1 + x2 = 3 + 2 / M and X1 * x2 = 2 + 2 / M are integers, so 2 / M is an integer, then M may be - 1,
-In addition, m must satisfy (3m + 2) ^ 2-2m ^ 2-2m > = 0, so the value of M is - 1, - 2,1,2

What's the difference between the product of 2.8 and 4 minus the quotient of 6.5 divided by 5?

2.8 × 4-6.5 △ 5 = 11.2-1.3, = 9.9. A: the difference is 9.9

A cuboid wooden box without cover, measured from the outside, is 6 decimeters long, 4.2 decimeters wide and 2 decimeters wide,
What's the volume of the wooden box?

Because the thickness of the wooden case is 0.1 decimeter, the case has two sides, so the length and width are subtracted by 0.2, and the height is subtracted by 0.1 because there is only one bottom edge without cover, so the formula (6-0.1 * 2) * (4.2-0.1 * 2) * (3.2-0.1) = 71.92

If a three digit number is divided by 37, the remainder is 17, divided by 36, and the remainder is 3, then the three digit number is 3______ ．

Let the quotient of a three digit number divided by 37 and the remaining 17 be a, then the three digit number can be written as: 37 × a + 17 = (36 + 1) × a + 17 = 36 × a + (a + 17). Because "divide by the remaining 3", so (a + 17) divided by 36 needs the remaining 3, and the quotient can only be 22. Therefore, the three digit number is 37 × 22 + 17 = 831

Find the first n terms and Sn of sequence (3n-1) * 2 ^ (n-1)

From Sn = 2 &; 1 + 5 &; 2 + 8 &; 2 ^ 2 + +(3n-1) &; 2 ^ (n-1), 2Sn = 2 &; 2 + 5 &; 2 ^ 2 + +(3n-4) & _; 2 ^ (n-1) + (3n-1) & _; 2 ^ n, subtracting the former from the latter, we get - Sn = 2 + 3 (2 + 2 ^ 2 +...) +2^(n-1))-(3n-1)•2^n=2+3[2^n-2]-...

Quadratic equation of one variable: x times (40-x) divided by 2 equals 180

A:
x(40-x)/2=180
x(40-x)=360
40x-x^2=360
x^2-40x+400-400+360=0
(x-20)^2-40=0
(x-20)^2=40
x-20=±2√10
x=20±2√10