11.4.5 Match the words in bold to their meanings:
• a sensor make better produce
conditions that affect brain function
• a means to exchange digital information
• a message sent along a nerve cell
a cell capable of becoming many different cell
types a device or software related to the brain
• use .active encourage increased activity​

We all love weekends, but not all of them are good. Recently I’ve had the worst weekend in my life. As usually I was hoping to spend great time with my family, my friends and my dog, but everything went wrong at that terrible weekend. The morning of Saturday started from an alarming incident. My beloved pet got sick. We had to take Gina to the vet instantly as she was having some breathing problems. As we later found out it was connected with her poor heart. The vet gave her special injection and she got a bit better. When we returned we were quite shocked to see that a part of our flat was flooded. Our neighbors from upstairs forgot to turn off the tap water and the result was terrible. Not only their bathroom but ours too was full of water. So, we spent half of the day cleaning the mess. Apart from water on the floor, there were some problems with the ceiling and walls which quickly became damp. It goes without saying that I had to cancel my meeting with friends. That weekend we were going to visit the cinema and spend some time ice-skating. Alas, these opportunities were lost. Now I had to wait for the next weekend to see them. My school days are usually rather busy and full of other activities. I thought things couldn’t get worse, but in the evening we got an urgent call from my grandma saying that she wasn’t feeling well. So, we didn’t have any supper and drove to her place as quickly as we could. My mum called the doctor and we stayed with her almost till midnight. I’m glad she finally felt better, but I missed my favourite sitcom. Sunday wasn’t fun either, as I spent the whole day cleaning up my room and doing my homework.

According to the history teacher of magic, Cuthbert Binns , Hogwarts was founded about a thousand years ago, four wizards : sorcerers Godric Gryffindor , Salazar Slytherin and Ravenclaw and fairies Candida Penelope Hufflepuff . The aim of the founders was the training and education of children with magical potential. These children were collected throughout the country. However, over time among the founders split. Salazar Slytherin believed that the school should not teach children whose parents