Nguyễn Kaly

Write the second sentence in each pair so that it means the same as the first. Choose the correct words in brackets.

 

1. I like traditional dances more than modern ones.

I ..................................... to .......................................... (enjoy/ love/ prefer)

2. Traditional dances are not as difficult as modern ones.

Modern dances .............................................................. (easier/ more difficult/ as difficult as)

3. A lot of tourists like flamenco.

Flamenco ........................................................................ (popular with/ popular to/ popular for)

4. I love to watch Spanish dancers performing Flamenco.

I ....................................................................................... (watch/ watching/ to watching)

5. Obon is a traditional Japanese dance.

Obon ................................................................................ (from Japanese/ from Japanese people/ from Japan)

6. The most popular form of the xoe dance is the circle dance.

No other forms of the xoe dance ................................................................. (enjoy/ more popular than/ popular)

7. Never talk with food in your mouth.

You ....................................................................... (mustn’t/ may not/ shouldn’t)

8. Never pick food out of your teeth with your fingernails.

You shouldn’t .................................................. to ..................................................... (use/ have/ hold)

Rin•Jinツ
9 phút trước

C

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hưng phúc
45 phút trước

a. Ta có: \(\overline{M_{hh}}=\dfrac{28.1+2.3}{1+3}=8,5\left(g\right)\)

=> \(d_{\dfrac{hh}{O_2}}=\dfrac{\overline{M_{hh}}}{M_{O_2}}=\dfrac{8,5}{32}=0,265626\left(lần\right)\)

b. Ta có: \(V_{N_2}=1.22,4=22,4\left(lít\right)\)

\(V_{H_2}=3.22,4=67,2\left(lít\right)\)

=> \(\%_{V_{N_2}}=\dfrac{22,4}{22,4+67,2}.100\%=25\%\)

\(\%_{V_{H_2}}=100\%-25\%=75\%\)

Ta có: \(m_{N_2}=1.28=28\left(g\right)\)

\(m_{H_2}=3.2=6\left(g\right)\)

=> \(\%_{m_{N_2}}=\dfrac{28}{28+6}.100\%=82,35\%\)

\(\%_{m_{H_2}}=100\%-82,35\%=17,65\%\)

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