Các bạn giải giúp mình 2 bài này vs mình đang gấp. Cảm ơn các bn nhìu
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a)8/25 ; 9/25 ; 12/25; 24/25
b)7/3 ; 7/9 ;7/8 ; 7/26
c)3/5 ; 9/10; 14/15; 23/30
d)5/9; 11/15 ; 11/18 ;14/15
1 A
2 D
3 B
4 D
5 A
6 D
7 C
8 A
9 C
10 B
11 D
IV
12 went
13 is playing
14 closing
15 don't drink
16 would visit
17 B
18 D
19 B
20 D
21 cook
22 it
23 his
24 On
25 him
26 because
27 B
28 D
29 C
30 B
31 A
VIII
1 Janet isn't interested in watching sports on TV
2 I Think you should go to school by bike
3 Lake Baikal is the deepest lake in the world
4 He doesn't have enough time to complete the test
5 The last time he visited HLB is 5 years ago
IX
37 In dry season there is alway a lack of water
38 Yesterday he was so tired that he didn't finish his work
39 There are 10 fingers and two arms on the body
40 What kind of TV programme do you like to watch the most when you were small?
=)) Mik chịu á, bạn cứ làm mấy chỗ khác trước và chừa chứng minh cho mik cx đc ạ
Nửa chu vi hcn là:
\(\dfrac{5}{2}:2=\dfrac{5}{4}\left(m\right)\)
Chiều dài hcn là:
\(\left(\dfrac{5}{4}+\dfrac{1}{4}\right):2=\dfrac{3}{4}\left(m\right)\)
Chiều rộng hcn là:
\(\dfrac{5}{4}-\dfrac{3}{4}=\dfrac{1}{2}\left(m\right)\)
Nửa chu vi hcn là : 5/2 : 2 = 5/4
Chiều dài hcn là : ( 5/4 + 1/4 ) : 2 = 3/4
Chiều rộng hcn là : 5/4 - 3/4 = 1/2
I
1.What type of energy do you use at home?
2.John uses low energy light bulbs to save electricity.
3.Mai can't go to the cinema at present because she is studying for her exam.
4.What book are you currently reading?
5.She is not swimming in the swimming pool at the moment.
6.Scientists are looking for a new energy source to replace coal now
II.
1. Coal is more expensive and more polluting than natural gas.
2. We are looking for cheap and clean and effective sourced of energy..
3.. You should switch off electrical appliances when they aren’t in use.
4. Despite being the most polluting of fossil fuels, coal is still the largest sources of energy worldwide.
5. People will use biogas for fuel in homes and for transport