Write out from the text the sentences with verbs in the form of the Participle or the Gerund or the Subjunctive mood. Elementary Hydraulic Systems. The simplest hydraulic system is perhaps the hydraulic shock absorber which consists of a pump (piston) and resistance. Another elementary type of system is the hydraulic weighing machine, which consists of a non-continuous pump element(piston or diaphragm) and a pressure gauge. Other elementary systems consists of a jack, transmission line, and a pump of the non-continuous type without control gear, although valves may still be present for secondary purposes. Systems of this type are used for remote transmission of manual or pedal effort or motion, or for remote transmission of instrument indication. The simplest best known system of this type hydraulic brake.

1. I haven't played tennis since I was at school but I was very good at it back then.

2. A: Have you chosen a dress for the party yet?

   B: Yes, I bought one yesterday.

3. A: Have you seen any new films lately?

   B: Yes, I watched the new James Bond film last week.

4. David has broken his leg. He fell off a horse last week.

5. Emma has lost her keys. She left them on the bus yesterday.

6. My friends have visited Egypt. They went there on holiday in 2010.

7. I think Mike has forgotten about the party! He didn't say anything about it yesterday.

8. Mr. Smith has lost his dog. It ran away last week.

9. I have finished decorating my room. I painted it last week and I put up the new curtains last night.

10. A: Have you sold your house yet?

    B: Yes, last month one family saw it and bought it.

Объяснение:

2. Наиболее распространенный источник инфекции, источник болезни, древние люди, защитный наружный слой, подобный эффект, предотвращать, проксимальная поверхность, слизистая оболочка.
3. 1) Bacteria. These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis. Viruses.
2) The digestive functions of saliva include moistening food, and helping to create a food bolus, so it can be swallowed easily. Saliva contains the enzyme amylase that breaks some starches down into maltose and dextrin. Thus, digestion of food occurs within the mouth, even before food reaches the stomach.
3) the last line of defense is that position where the mission is to hold enemy forces and not allow them to pass.
4. through cuts on the skin, food, gastric juice, more favorable conditions, harmless, destruction