Теплоход за 3 дня прошел 900км,причем во второй и третий день в два раза больше,чем в первый.сколько километров проходил теплоход в каждый их этих дней?

Ca -> CaO -> CaCl -> Ca(OH)2 -> CaCo3

AEO ”NAZARBAYEV INTELLECTUAL SCHOOLS”

TASKS FOR COMPETIVE SELECTION OF STUDENTS

English, 7 grade

1.    Will you go to the stadium if you … a ticket?

A)    have

B)    had

C)    have had

D)    would have

E)     will have

***

2.    The soup was … cold.

A)    too

B)    to

C)    enough

D)    two

E)     not to

***

3.    … eggs in this cake?

A)    Are there any

B)    Is there any

C)    Are there some

D)    Is there some

E)     Some

***

4.    You … to a word … .

A)    haven't listened /I've said

B)    listened /I haven't said

C)    didn't listen / I say

D)    listened /saying

E)     listened/says

***

5.  I can't believe that … the news.

A)    you haven't read

B)    you didn't read

C)    you don't read

D)    you read not

E)     read

***

6.    What’s the matter? My car … .

A)    has just been stolen

B)    was just stolen

C)    is just stolen

D)    being slealen

E)     steal

***

7.    My sister … to hospital tomorrow.

A)    will be taken

B)    is being taken

C)    was taken

D)    token

E)     taken

***

8.    The cake … so nice.

A)    smells

B)    smelling

C)    smelt

D)    is smell

E)     is smells

***

9.    The conference room … at the moment.

A)    is being used

B)    was being used

C)    had been used

D)    used

E)     using

***

10.  Ann didn’t know what … .

A)    to answer

B)    answering

C)    answer

D)    answerring

E)     answered

***

11.  Don’t forget … everything I asked for.

A)    to buy

B)    buying

C)    to buying

D)    bought

E)     buy

***

12.  Tom said he … to see a new film.

A)    wanted

B)    has wanted

C)    will want

D)    wanted

E)     have wanted

***

13.  Nick demanded … the window.

A)    to close

B)    closed

C)    to be close

D)    closing

E)     closes

***

14.  They’ll go to the restaurant if they … a table in advance.

A)    reserve

B)    would reserve

C)    reserved

D)    reserving

E)     will reserve

***

15. Did you find … who took your coat?

A)    out

B)    in

C)    about

D)    up

E)     over

***

мини-рассказ о сельскохозяйственных работах на полях

4sin x-sin2x=0:

sin2 x-cos x=0:

Буду презнателен тому кто поможет))