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CM
7 tháng 11 2017
Đáp án C
Ta có w = 2 i - 3 + 2 i . ( i 2 ) 3 = 2 i - 3 + 2 i = - 3 + 4 i ⇒ w i = - 4 - 3 i ⇒ w i = 16 + 9 = 5 .
2
1
18 tháng 4 2020
1. a, where b, winter c, warm d, wrong
2. a, who b, what c, where d, why
Học tốt ~
IM
25 tháng 8 2016
1.orange ,wrote,won,do
2.cake,grape,orange ,water
3.lemon,get,decide,mineral
4.weekend ,meet,engineer,beer
5.under,uncle,music ,lunch
6.in,nice,behind,like
22 tháng 9 2016
1. orange, wrote, won, do
2. cake, grape, orange, water
3. lemon, get, decide, mineral
4. weekend , meet, engineer, beer
5 . under, uncle, music, lunch
6. in , nice , behind, like
N
6 tháng 1 2020
Question 22: the following are the advantages of using WI-FI on your smartphone EXPECT that ………
A. it doesn’t need a hotspot to connect all your mobile devices.
B. it is faster than the 3G cellular networks. C. it is cheaper than using the 3g networks.
D. it makes your phone run more efficiently in the long run.
Question 23: By using W-FI, you …………….
A. can you all your bundled data for free
B. can use a certain amount of data for free each month
C. may stay under the data capacity allocated by mobile provides.
D. save your bundled dât for situations when you use a WI-FI network.
Question 24. A WI-FI connect offers ………….
A. better large files
B. faster smartphone
C. no need for hurry
D. better speeds
Question 25. Using wi-fi offers longer battery life because …………..
A. you will be able to connect to other devices when your battery is low.
B. it requires less time with the same task than using mobile networks
C. the internet harms the battery life so much.
D. it requires so little energy while the cellular coverage fluctuates.
Question 26. The word “drain” in the last paragraph is closest in meaning to ……..
A. improves B. saves C. increase D. reduces(lack)
DM
21 tháng 2 2017
1) Chọn từ có phần in đậm, phát âm khác với các từ khác trong nhóm
1. A. measure B. Head C. please D. heavy
2. A. this B. with C. mouth D. breathe
3. A. disappear B. year C. dear D. wear
4. A. wow B. blow C. now D. how
5. A. virus B. slight C. write D. sick
2) Sắp xếp các từ sau để thành câu hoàn chỉnh.
1. record/ filling/Lan/is/her/ medical.
-> Lan is filling her medical record.
2. absent/ class/ headache/ she/ because/ was/ from/ had/ a/ she.
-> She was absent from class because she had a headache.
3. cold/ then/ last/ disappear/ few/ will/ the/ for/ days/ a/ and.
-> The cold will last for a few days and then disappear.
4. better/ stay/ Lan/ recess/ inside/ at/ had.
-> Lan had better stay inside at recess.
5. week/ cold/ I/ had/ last/ bad/a.
-> I had a bad cold last week.
6. takes/ temperature/ first/ nurse/ my/ the.
-> The nurse takes my temperature first.
7. scale/ weigh/ the/ nurse/ me/ uses/ a.
-> The nurse uses a scale to weigh me.
8. their/ nurse/ temperature/ to/ needs/ first/ the/ take.
-> The nurse needs to take their temperature first.
9. notes/ will/ the/ sick/ them/ for/ doctor/ write.
-> The doctor will write sick notes for them.
10. their/ in/ will/ medical/ they/ record/ fill.
-> They will fill in their medical record.
LT
16 tháng 2 2019
1)1.C;2.C;3.D;4.B;5.D.
2)1.Lan is filling her medical record.
2.She was absent from class because she had a headache.
3.The cold will last for a few days and then dissappear.
4.Lan had better stay inside at recess.
5.I had a bad cold last week.
6.The nurse takes my temperature first.
7.The nurse uses a scale to weigh me.
8.The nurse needs to take their temperature first.
9.The doctor will write sick notes for them.
10.They will fill in their medical record.
STUDY WELL!!!
DM
18 tháng 11 2016
1: A: traffic B: write C: arrive D: drive
2: A: load B: road C: slow D: copy
3: A: turn B: truck C: bus D: run
4: A: end B: help C:read D: ahead
5: A: slow B: close C: down D: go
13 tháng 2 2022
a: A giao B là {cam;chanh}
b: A giao B là tập hợp các học sinh vừa giỏi toán vừa giỏi văn
c: A giao B là tập hợp các số chia hết cho 10 vì B là tập con của A
d: A giao B là tập rỗng
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