в прямоугольном треугольнике с углом 45 градусов и гипотенузой 8 см проведены средние линии. найдите периметр треугольника, образованного средними линиями.

TASK 1

First books were made of wood, clay or skins of ______________ animals.                                      KILL

Рареr came to Europe from China.  All books were _________________ decorated.                     BEAUTY

The __________________ of printing was a great event in the history.                                             INVENT

Modern books are very _______________________.                                                                            INTEREST

They help people get information ____________________.                                                                 QUICK

TASK 2

I live in Russia. It’s  the _________________ country in the world.                                                         BIG

It has many rivers, hills, seas and _____________________.                                                                   CITY

The capital of Russia _________ Moscow.                                                                                                    BE

__________ country is large.                                                                                                                           WE

It _______________ many lakes.                                                                                                                   HAVE

The ______________________is Lake Baikal.                                                                                            DEEP

TASK 3

My parents and I like (go) to the Black Sea in summer. The water in the sea (be) usually clean and warm. Look! The sun (shine) brightly in the blue sky. The wind (blow). But when it (be) too hot I (not like )it.

Last year I (go) to the sea again. It (be) wonderful. We ( swim) and (sunbathe) every day. Sometimes we ( collect) shells and pebbles. It (be) great!

TASK 4

1.      I often_________________________________.

(A) TRAVEL   (B)   TO TRAVEL    (C)  TRAVELLING

      2.    Bob is _________________________than John.

           (A)  TALL          (B)  TALLER            (C) THE TALLEST

      3. Yesterday we __________________ to the park.

          (A)  GO                (B) GOES                 (C)   WENT

Перефразируйте фразы (paraphrase using the construction have got to do something) 1.Ann has to run.2.Billy has to play the piano every evening.3.We don`t have to wake him so early .4.Where do you have to go?5.They don`t have to learn Welsh .6.I have to phone Phil.

Определите m (Fe) необходимого для получения 43.5грхлорида железа(III) 

Уравнение:

1)7целых1четырнадцатоеx-x=9целых3восьмых

2)1:2целых7девятых=x+4целЫх2пятых X

СДЕЛАЙТЕ ХОТЬ ОДНУ ПЛИЗ!