Нужно вставить данные слова в пропуски: motorcycles • spark plugs • valves • burns • intermittent • reciprocating • polluting • runs • light • size • rotary • cycle • rockets
The spark-ignition two-stroke engine is an internal combustion (a) …………… motor, usually employed for chainsaws, (b) or boats. Relatively small and (c) ……… , it uses two strokes for every power (d) ………… and does not employ intake and exhaust (e) ………… but ports: special holes cut into the cylinder wall. It is quite powerful for its (f) ………… but tends to heat up and has a short life; besides, it (g)………… a lot of gasoline and oil, thus being very (h) ………… . Diesel engines are internal combustion reciprocating engines which do not rely on (i) ………… to cause combustion but exploit compressed air and spontaneous ignition of injected fuel. Gas engines are similar to gasoline ones but employ natural gas instead of gasoline vapour.
The Wankel engine (j) ………… on a four-stroke cycle but is a (k) ………… engine since the crank mechanism is replaced by a rotor. The reaction engine used for jets and (l) ………… and the gas turbine are not reciprocating, in fact combustion is not (m) ………… but continuous.

1.has gone

2.have gone

3.have you passed

4.consulted

the tiger is the largest cat species, reaching a total body length of up to 3.3 metres and weighing up to 306 kg. their most recognizable feature is a pattern of dark vertical stripes on reddish-orange fur with lighter underparts. they have exceptionally stout teeth, and their canines are the longest among living felids, with a crown height of up to 74.5 mm.they are territorial and generally solitary but social animals, often requiring large contiguous areas of habitat that support their prey requirements. this, coupled with the fact that they are indigenous to some of the more densely populated places on earth, has caused significant conflicts with humans. in zoos, tigers have live for 20 to 26 years, which also seems to be their longevity in the wild.

имя генри сесил генри сесил (настоящее имя генри сесил леон) писатель детектив.  он родился в middlesex до первой мировой войны, автор многих успешных книг: "алиби для судьи", "друзья на суд», «трезвый, как судья» и другие.  "урегулирован во внесудебном порядке", в драматической версии сделаны уильям сароян и автор, побежал в течение некоторого времени на strand театра.  ! джордж слон 'называется клерк в суде номер один, и маленький человек в очках был доставлен.  'вы джордж слон? спросил клерк.  «я есть»."вам предъявляется обвинение в убийстве, что вы на голдерс грин на 19-й день января 1948 года, убитых джейн слона.  как скажете вы, джордж слон, ты виновен или не виновен? "не виновен". " хорошо, сказал судья.  'вы можете сесть. "за исключением нескольких замечаний по любопытное имя заключенного, мало кто заинтересован в деле.  факты, как указано было просто.  на 20 января заключенный вошел в полицейский участок.  "я порезал себе жену` ы в горле, сказал он.  "she` ов совсем мертвый. казалось, правда.  ее горло, казалось, были вырезаны бритвой который был рядом с ней тела.  георгий родился обычных родители из среднего класса в конце девятнадцатого века.  существовал никаких признаков безумия в семье.  после окончания школы джордж ушел в своего отца `бизнес-ы, и после этого он женился и поселился в обычной жизни.  джейн не была особенно привлекательной женой.  хотя она была красива, она выросла жира, как она становилась старше.

my favorite book is «the old man and the sea» by ernest hemingway. this story is one of the well-known works of the writer. the author depicts the characters of the old man and the boy and their relations very vividly and skillfully. santiago, the old man, was one of the writer's beloved characters. the old man was a born fisherman, but he was not a butcher and fished only for a living. he was very lonely. he had a devoted friend - the boy, manolin. the boy loved the old man for his kind heart, his devotion to the sea. manolin was like a son to santiago. he took care of the old man's food and his belongings. the old man was glad to pass his experience to the boy. he looked forward to going to the sea together with the boy. all santiago's life had been in preparation for the battle with big fish. he knew that he had been born for this and it was time to prove it. a strong man at last had met a strong fish. the battle was a difficult one and full of danger. though the sharks had eaten the fish and nothing had left but the backbone, the old man had morally won the battle. santiago's words «man can be destroyed but not defeated» are the main idea of this story. «the old man and the sea» is a masterpiece for its imaginative language and the description of nature.