*Language point:Layout and language in a formal letter* Study the text again and answer the questions. 1.Where is the writer's address? 2.Where is the date? 3.Where is the address of the company that is going to receive the letter? 4.Does the writer use full forms of verbs or contractions?Find examples. 5.Does the writer use formal or informal phrases?Find examples

The weather is very changeable. It can be great or terrible. As for me, I like when the weather is sunny and warm in any season. When the weather is dry , sunny and warm you can spend much time outdoors. It's cool to walk with friends and play different games in such moments. In summer you can go to the country, swim in the river, ride a bike  and do a lot of funny and interesting thigs when the weather is fine. In winter it's also important. It's not so comfortable to play snowballs, skate ot ski when you're frozen.) 

Physics has always been my favorite subject, I am very good at it. I have a couple of certificates for this subject. I love learning how things work. For example, how does Newton's lamellar work? In Newton's cradle, the first ball transfers momentum to the second ball and stops. The second ball receives an impulse of potential energy from the first, but due to the impossibility of transforming the potential. Newton's lullaby, shows the conservation of inertia. Or a simple, familiar whirligig. A rapidly rotating whirligig does not fall due to the gyroscopic effect, but gradually due to friction, the angular velocity of its own rotation decreases. When the speed rotation becomes insufficiently large, the axis of the top begins to spiral-like deviate from the vertical (precess), and in the end the top stops rotating and falls. The spinning top is the simplest example of a gyroscope, which is an essential element in a number of navigation instruments.