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16 tháng 12 2022

touch

16 tháng 12 2022

touch

20 tháng 3 2018

Tiêu chí

đất ferralit đất phù sa đất mùn núi cao

Diện tích

chiếm 65% diện tích đất tự nhiên chiếm 24% diện tích đất tự nhiên chiếm 11% diện tích đất tự nhiên
Đặc điểm chua, ghèo mùn, nhiều sét, màu vàng, đỏ phì nhiêu, màu mỡ, ít chua, tơi xốp giàu mùn, tích tụ nhiều oxit nhôm
Phân bố

vùng đồi núi thấp, Đông Nam Bộ và Tây Nguyên

vùng đồng bằng, ven biển trên núi cao
5 tháng 7 2020

chuẩn bạn êi

14 tháng 3 2019

1. A. game B. famous C. distance D. grape
2. A. founded B. repaired C. filled D. loved
3. A. sugar B. such C. spring D. similar
4. A. festival B. together C. elephant D. telephone

17 tháng 3 2020

1.C

2.A

3.A

4.C

29 tháng 4 2018

A B C x D E y

Xét  tam giác \(ABE\) \(\&ADC\)

\(BAE=ADC\)(góc chung)

\(\frac{AB}{CD}=\frac{8}{10}=\frac{4}{5};\frac{AE}{AC}=\frac{12}{15}=\frac{4}{5}\)

\(\Rightarrow tamgiácABE~tamgiacADC\left(C.G.C\right)\)

b) Từ tam giác \(ABE\) \(~\)tam giác \(ADC\)\(\Rightarrow\frac{AB}{CD}=\frac{BE}{DC}\Rightarrow DC=\frac{AD\cdot BE}{AB}=\frac{10\cdot10}{8}=12,5\)

c) Từ tam giác \(ABE~\)tam giác \(ADC\left(cmt\right)\)

\(\Rightarrow\frac{S_{ABE}}{S_{ADC}}=\left(\frac{AB}{AD}\right)^2=\left(\frac{8}{10}\right)^2\left(\frac{4}{5}\right)^2=\frac{16}{25}\)

Complete the following text by writing ONE suitable preposition in each gap. Cotton was cultivated in pakistan about 3,000 BC. It was also grown in Central America. Later it was also grown _____ Iraq and Egypt. The Industrial Revolution made cotton uch cheaper. In 1771 Richard Arkwright opened a cotton-spinning mill with a machine called a water frame, which was powered_____ a water mill. Then, in 1779, Samuel Crompton invented a new cotton-spinning machine called a spinning mule. Finally, in...
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Complete the following text by writing ONE suitable preposition in each gap.

Cotton was cultivated in pakistan about 3,000 BC. It was also grown in Central America. Later it was also grown _____ Iraq and Egypt. The Industrial Revolution made cotton uch cheaper. In 1771 Richard Arkwright opened a cotton-spinning mill with a machine called a water frame, which was powered_____ a water mill. Then, in 1779, Samuel Crompton invented a new cotton-spinning machine called a spinning mule. Finally, in 1785 Edmund Cartwright invented a loom that could be powered by a steam engine. In 1794 American Eli Whitney patented the cotton gin. As a result_____ these new inventions cotton production boomed.

In 1884 Count Hilaire de Chardonnet made the first artificial fibre, from plant cellulose. In the following chemists invented new ways of making fibres_____ cellulose and by the 1920s they were common. The name rayon was invented in 1924.

Nylon was first made in 1935 by Wallace Carothers. Nylon stockings went_____ sale in 1940. Terylene was invented by British scientist John Rex Whinfield and James Tennant Dickson in 1941. Spandex was invented by Joseph Shivers in 1958. It was first manufactured in 1962

2
1 tháng 1 2020

Complete the following text by writing ONE suitable preposition in each gap.

Cotton was cultivated in pakistan about 3,000 BC. It was also grown in Central America. Later it was also grown _on_ Iraq and Egypt. The Industrial Revolution made cotton uch cheaper. In 1771 Richard Arkwright opened a cotton-spinning mill with a machine called a water frame, which was powered__from___ a water mill. Then, in 1779, Samuel Crompton invented a new cotton-spinning machine called a spinning mule. Finally, in 1785 Edmund Cartwright invented a loom that could be powered by a steam engine. In 1794 American Eli Whitney patented the cotton gin. As a result__from_ these new inventions cotton production boomed.

In 1884 Count Hilaire de Chardonnet made the first artificial fibre, from plant cellulose. In the following chemists invented new ways of making fibres__for___ cellulose and by the 1920s they were common. The name rayon was invented in 1924.

Nylon was first made in 1935 by Wallace Carothers. Nylon stockings went__off sale in 1940. Terylene was invented by British scientist John Rex Whinfield and James Tennant Dickson in 1941. Spandex was invented by Joseph Shivers in 1958. It was first manufactured in 1962

1 tháng 1 2020

in / by / of / from / on

Bài 1:a>I can see a lot of .................... getting off other planes.b>My mum is reading a ...................... to check the weather.Bài 2:Much or many  1............. luggage                            4..............peace                         7................music                 10..................chairs                2..............love                                  5...............hands                        8..................sense               ...
Đọc tiếp

Bài 1:

a>I can see a lot of .................... getting off other planes.

b>My mum is reading a ...................... to check the weather.

Bài 2:

Much or many 

 1............. luggage                            4..............peace                         7................music                 10..................chairs                

2..............love                                  5...............hands                        8..................sense                11..................plates

3..............printers                            6................cheese                      9...................ideas                12..................traffic

13............evenings                          14...............picture                      15.................stars

 

0
cho dang dung cua dongtu theo dang 1.my mother never makes me (work).......... hard 2.you have to (finish).............all the homework before going to bed 3,must we(wash)............our hands before meat? 4.let him (do)...........what he wants 5.i often have my mother(wash)...........the clothes everyday 6.will you please(pass)........me some salt?->here you are 7.it's very hot now.i want(hve)..............a cold drink 8.would you like (come).........to my house for dinner tonight? 9.my mother...
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cho dang dung cua dongtu theo dang 1.my mother never makes me (work).......... hard 2.you have to (finish).............all the homework before going to bed 3,must we(wash)............our hands before meat? 4.let him (do)...........what he wants 5.i often have my mother(wash)...........the clothes everyday 6.will you please(pass)........me some salt?->here you are 7.it's very hot now.i want(hve)..............a cold drink 8.would you like (come).........to my house for dinner tonight? 9.my mother told me(turn)............off the lights be fore going out 10.i asked her(not eat)............too uch meat because she is overweight 11.i often takes me 20 minutes(go)..........to school every morning 12.i often spend my free time(play)...........soccer 13.the woman(stand)............over there is my new teacher 14.the boy prefers(read).............comics to (play).........vides game 15.the boy (read)..............a book is Ba 16.do you know the girl (talk)............to the teacher over there? 17.the lamp(make).............in china is 5 dollars 18.the car toy(sell)............in this shop are made in china 19.i like reading the book(write)...............by Shakepeare 20.have you ever seen the movie(show).................on TV last night 21.do you like the gift (give)..............on your last birthday? có cả giải thích nữa cần gấp lắm
0
II.Choose one word whose underlined part is pronounced differently from the others in each following line. 1.A. talked B. visited C. rented D. fitted 2.A. help B. friend C. send D. fewer 3.A. stamp B. sew C. opposite D. bookstore 4.A. milk B. library C. dinner D. polish 5.A. pork B. go C. hold D. cold VI.Put the questions for the underline words: 1. My brother plays video games twice a week. ->.................................................................... 2. We rarely eat out...
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II.Choose one word whose underlined part is pronounced differently from the others in each following line.

1.A. talked B. visited C. rented D. fitted

2.A. help B. friend C. send D. fewer

3.A. stamp B. sew C. opposite D. bookstore

4.A. milk B. library C. dinner D. polish

5.A. pork B. go C. hold D. cold

VI.Put the questions for the underline words:

1. My brother plays video games twice a week.

->....................................................................

2. We rarely eat out because it is far too expensive.

->...............................................................................

3. Minh usually spends one hour on computer games.

->.............................................................................

4. Her son is going to invent a new game.

->.........................................................................

5. They were in the library last night.

............................................................................................

V. Choose the incorrect words underlined (A,B,C or D ) and correct them.

25. We didn't wanted to go to the park because it was raining heavily

A B C D

26. Mary didn't buy any books because the bookshop closed ten minute ago.

A B C D

27. We never likes living in a big city because it is too noisy.

A B C D

28. I can't speak Chinese and neither can't my brother.

A B C D

29. I want to buy a few sugar.

A B C D

V. Prepositions:

1. The students like to take part ______ outdoors activities.

People watched TV___the window.

Hoa sets the table______plates,bowls,chopsticks, spoons and glasses.

I. Circle the word that has the underlined part pronounced differently from the others.

1.A. decide B. type C. improve D. smile

2.A. iron B.drill C. fill D.gifl

3.A.dust B.touch C. stomach D. normal

44.A. amusement B.durian C.cucumber D. scuba-diving.

Hồ Bảo Trâm cj iu ưi, ráng giúp e nhoa :333 iu cj <333

1
1 tháng 5 2020

Hàn Thiên Rin kk lúc nãy có off thiệt mà nhớ là còn phải giúp e nên onl trở lại

1 tháng 5 2020

Hàn Thiên Rin hí hí cảm ơn e nha

2 tháng 11 2021

B

HN
Hương Nguyễn
Giáo viên
2 tháng 11 2021

D

17 tháng 2 2017

Bài giải đã giải thích rồi mà......Với 0<t<1 =>\(\left\{\begin{matrix}t^3>0\\1-t>0\end{matrix}\right.\) tích hai số dương => phải dương