Flat 45,177 kirov st
248000 kaluga
5 august
how are you getting on? i haven't heard from you for ages. where have
you been?
i'm fine. at the moment i'm at home. i need some rest after my summer
adventures. they were very exciting.
in june we went camping in the forest in karelia. fortunately the
weather was great. there are a lot of beautiful lakes there too. next year
we'll probably go there again. do you want to come with us?
in july i went to see my granny. she lives in a nice little village near
kaluga. my friends and i had a lot of fun. unfortunately, their life isn't
easy. a lot of people in the village have lost their jobs and they don't have
much money.
i'm spending august at home because i have to get ready for school.
this year is going to be very important for me. the good news is that
helen, who is good at all school subjects, promised to help me. do you
remember her?
i miss you a lot. how are you? how's your little brother? say hello to
your mum and dad too. i hope they're fine.
write soon!
best wishes,
your friend
19
unit 1 lessons 4,5
напишите ответ на это письмо
2) Much of the equipment in the office needs updating.
3) A car is a means of transport.
4) How many cigarettes do you smoke a day?
5) When I got to the theatre, they were already playing the second act.
6) Unusual facts, marvels are called phenomena.
7) The brown sweater is the best.
8) That was the most interesting movie I have ever seen.
9) Uncle Carl is really a sweet old man.
10) Which is the longest river, the Dnipro or the Dnister?
11) Fanny can sew dresses so well.
12) Taras drives dangerously.
13) Those apples look delicious. May I have one?
14) She often sneaks out of the house quietly.
15) I absolutely refuse to stay here any longer.
Muscle Contraction: Muscles are made up of bundles of individual muscle fibers. When these muscle fibers receive signals from the nervous system, they contract, which means they shorten and generate force. This contraction is the primary mechanism by which muscles create movement.
Muscle Groups and Antagonistic Pairs: Muscles often work in groups and pairs to create coordinated movements. For example, when you bend your arm at the elbow, the biceps muscle contracts, while the triceps muscle relaxes. These muscles are known as antagonistic pairs, as they have opposing actions.
Tendons and Bones: Muscles are attached to bones via tendons, which are strong connective tissues. When a muscle contracts, it pulls on the attached tendon, which, in turn, pulls on the bone, causing movement around the joint.
Muscle Fiber Types: Our muscles consist of different types of muscle fibers, including slow-twitch fibers and fast-twitch fibers. Slow-twitch fibers are responsible for endurance activities and sustained contractions, while fast-twitch fibers generate more force and are involved in quick, powerful movements.
Muscle Synergies: Multiple muscles often work together in a coordinated manner to perform complex movements. These muscle synergies involve the activation and synchronization of various muscle groups to produce smooth and efficient motions.
Fine Motor Control: In addition to larger movements, our muscles also enable fine motor control. Small, intricate movements, such as typing on a keyboard or holding a pen, require precise coordination of muscles and motor units to execute precise actions.