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X.Write complete sentences,using the gives cues
47. not very far/ Ha Noi/ Noi Bai Airport
=> It is not very far from Ha Noi to noi Bai Airport
48. Turn/ all/ light/ every/ time/ leave/ room
=> turn off all lights every time when leave room
49. I/ think/ skate/ more/ interesting/ mountain - climbing
=> I think skating is more interesting than mountain- climbing
50. when/ I/ ten/ begin/ play football
=> What I was ten , I began play football
51. in/ future/ my father/ go aboard
=> In the future, my father will go abroad
47. It not very far from Ha Noi to Noi Bai Airport
48.Turn off all the light every time when you leave room
49.I think shate is more interesting than climbing the moutain
50.When I was ten , I began played football
51.In the futuer my father will go aboard
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Từ 1 đến 154 có số số hạng là : ( 154 - 1 ) : 1 + 1 = 154 ( số hạng )
Tổng các số đó là : ( 154 + 1 ) x 154 : 2 = 11935
Vậy ta kết luận tổng các số từ 1 đến 154 không chia hết cho 2 nhưng chia hết cho 5.
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Ta có:
A = 19981998.1999
A = 1998.10001.1999
B = 1998.19991999
B = 1998.1999.10001 = A
Vậy A = B
Ta có: A = 19981998.1999
=> A = (1998.10001).1999
Lại có B = 1998.19991999
=> B = 1998.(10001.1999)
Vậy A = B
1) 1B ;
2D ;
3A ;
4C
5B ;
2) /i/ : milk ; city ; live ; thing ; busy ; slim ; sit
/i:/ : see ; read ; leave ; sleep ; police ; sheep ; beach ; sea ;