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Старшеклассник Петя спускается в метро по движущемуся эскалатору за 24 секунды, по наподвижному с той же скоростью за 42 секунды. За какое время он спустится, стоя на ступеньке движущегося эскалатора?
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Предмет:
Математика -
Автор:
konnor - 5 лет назад
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Ответы 3
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42-24=18 секунд................................................
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Автор:
noeliaeqrf - 5 лет назад
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0
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42-24=18это же просто. ....
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Автор:
stewart - 5 лет назад
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0
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ответ не 18 а 56
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Автор:
cream_pie - 4 года назад
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0
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Определите видовременную форму глагола в каждом предложении:
1) Sasha has been to England.
2) By September Natalie will have been
working at the shopping mall for 6 months.
3) Mr Garrett will have been waiting
for Sasha for half an hour.
4) Sasha lives in Moscow.
5) He likes to travel.
6) He has visited many English museums.
7) He has just met an American boy.
8) Sasha has been studying English for
two years.
9) Alison had decorated the table by
the time her dad came home.
10) When Natalie came home, her friends
had already hidden behind the couch.
11) Sasha and Joey have been playing
games for an hour.
12) They have been flying over the ocean
for two hours.
13) The boys will be watching TV in the
evening.
14) Natalie will be working in the mall
tomorrow evening.
15) Joan will be teaching at school at
nine o’clock in the morning.
16) You remember Sasha.
17) You visit another English-speaking
country with him. His sister and he live in Moscow.
18) Joes has been to Moscow.
19) You have just read a dialogue “Welcome
to America”.
20) The pilot has turned off the “Fasted
Seatbelt” sign.
21) They like to travel.
22) They collect stamps and coins.
23) The stewardess has been serving
lunch for twenty minutes.
24) Some people have been watching TV
since ten o’clock.
25) Alison had been painting a poster
for an hour when Natalie came home.
26) Mrs Garrett had been baking a birthday
cake for an hour when Alison came home from school.
27) Sasha will fly to Washington on Delta.
28) They will meet him at the airport.
29) The plane will leave Atlanta at 10:05 a.m. on
Monday.
30) They will arrive in Washington at 3:05 p.m. local
time.
31) His sister often plays games with
Sasha.
32) He likes fruit juices very much.
33) Most English and Americans
understand each other quite easily.
34) He speaks English very well.
35) He understands American English
quite easily.
36) He likes to write long letters.
37) We will receive letters from Sasha.
38) Sasha will be staying with an
American family the whole summer.
39) Alison will be playing ping-pong in
the recreation room after school.
40) The Atlanta workers will have finished the
construction of the highway by September.
41) Sasha will already have left the
city by the time they finish work on the highway.
42) Natalie will have entered college by
Sasha’s departure.
43) Mr Garrett will have returned to his
office by the time Sasha leaves for Russia.
44) By the end of the year the Garrett
will have been living in their house for 5 years.
45) The teenagers were eating a birthday
cake when Mr Garrett came home.
46) While Alison was dancing Natalie was
reading her birthday cards.
47) They organized a surprise birthday party.
48) Alison invited all Natalie’s
friends.
49) Mrs Garrett made a lot of food.
50) The children brought birthday
presents for Natalie.
51) The children had been dancing for an
hour when Mr Garrett came home.-
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