Alexander Fleming's Discovery of Penicillin

Difficult words: a) physician, b) lysozyme, c) antiseptics, d) the Nobel Prize, e) staphylococcus, f) pneumonia, g) leucocytes, h) physiology, i) meningitis, j) penicillin.
Can you guess the meaning of the words above? Match them with their definitions (be attentive as there is no deffinition for one of the words above):

1. an enzyme occuring in tears, certain body tissues, destroys bacteria by hydrolyzing polysaccharides in their cell walls;
2. an antibiotic that kills bacteria and is used to treat many types of infections, including pneumonia, gonorrhea and others;
3. the branch of biology that deals with the normal functions of living organisms and their parts;
4. a person qualified to practice medicine;
5. any of six international prizes awarded annually for autstanding work;
6. a white or colourless cell which circulates in the blood and body fluids and is involved in counteracting diseases;
7. a substance that kills germs and harmful bacteria;
8. any Gram-positive bacterium including many pathogenic species;
9. a serious diseas which affects your lungs and makes it difficult for you to breathe.

33 weather idioms and idiomatic expressions by online-english-lessons.eu

The weather in spring changes very quickly here, so it is not easy to choose suitable clothing.

As you know the weather is quite unpredictable in England and  they  have so many idioms and idiomatic expressions relating to the weather in English. Folowing the link you'll get the meaning of 

33 weather idioms and idiomatic expressions.

My heart's in the highlands

The poem of the national poet of Scotland Robert Burns

My Heart's In The Highlands
My heart's in the Highlands, my heart is not here,
My heart's in the Highlands a-chasing the deer -
A-chasing the wild deer, and following the roe;
My heart's in the Highlands, wherever I go.

Farewell to the Highlands, farewell to the North,
The birth place of Valour, the country of Worth;
Wherever I wander, wherever I rove,
The hills of the Highlands for ever I love.

Farewell to the mountains high cover'd with snow;
Farewell to the straths and green valleys below;
Farewell to the forests and wild-hanging woods;
Farwell to the torrents and loud-pouring floods.

My heart's in the Highlands, my heart is not here,
My heart's in the Highlands a-chasing the deer
Chasing the wild deer, and following the roe;
My heart's in the Highlands, wherever I go.

Animal life: Sharks appear dead when upside down

Discover how these fearsome creatures are immobilised when flipped over

Many animals are capable of entering a trance-like state called tonic immobility whereby they appear dead to their surroundings. In the case of sharks it has been observed on many different species such as the lemon shark, reef shark and tiger sharks upon simply placing them upside down.

During tonic immobility the dorsal fin becomes straightened and the breathing and muscle contractions become more relaxed. It is such a reliable behaviour in certain sharks that it is used as a type of anaesthesia before minor surgery.

Some killer whales have learned to take advantage of this by using their tails to create currents in the water that can turn a shark over in order to eat it. The reason this happens to sharks is unclear, but it can be argued that tonic immobility has a role to play in survival allowing the shark to blend into the surroundings by being completely motionless, but in this case it’s obviously a disadvantage for the shark.

It has also been speculated that it may be something to do with the mating ritual of certain shark species as in some cases it can be induced by massage.

 From: www.animalanswers.co.uk 

Words: tonic immobility мнимая смерть, dorsal fin спинной плавник, current течение, to take advantage  извлекать выгоду