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KY
2 tháng 8 2021
I. Choose one sentence that best rewrites the sentence given:
1. They understand more than we do.
A. We don’t understand as much as they do.
B. We don’t understand anything at all.
C. They understand everything inside out.
D. They are very intelligent.
2. It is much more difficult to speak English than to speak French.
A. To speak French is more difficult than to speak English.
B. To speak English is more difficult than to speak French.
C. Speaking English is more difficult than to speak French.
D. Speaking French is not as difficult as to speaking English.
3. My interview lasted longer than yours.
A. Your interview wasn’t as short as mine.
B. Your interview was shorter than mine.
C. Your interview was as long as mine.
D. Your interview was longer than mine.
4. When I was younger, I used to go climbing more than I do now.
A. Now I don’t go climbing anymore.
B. I used to go climbing when I was younger.
C. Now I don’t go climbing as much as I did.
D. I don’t like going climbing any more.
5. Your coffee is not as good as mine.
A. Mine is better than yours.
B. My coffee is better than your.
C. My coffee is better than yours.
D. My coffee is more good than yours.
6. I can’t cook as well as my mother does.
A. My mother can cook better than I can.
B. My mother can’t cook better than I can.
C. My mother can cook well than I can.
D. I can cook better than my mother can.
7. Murder is the most serious of all crimes.
A. Murder is very serious.
B. No crime is more serious than murder.
C. Everyone is very afraid of murder.
D. Murder is the dangerous crime.
8. No one in this class as tall as peter.
A. Peter is taller than in this class.
B. Peter is the tallest in this class.
C. Peter is the most tall in this class.
D. Peter is more tall than in this class.
9. This is the best music I have ever heard.
A. I‘ve ever heard better music than this.
B. I‘ve ever heard such a good music as this.
C. I‘ve ever heard so good music as this.
D. This is the first time I‘ve heard this good music.
10. People dive fast. Many accidents happen.
A. The faster people drive, the more accidents happen.
B. The more fast people drive, the more accidents happen.
C. The much fast people drive, the more accidents happen.
D. The faster people drive, the much accidents happen.
8. I meet him much. I hate him much.
A. The better I meet him, the more I hate him.
B. The more time I meet him, the more I hate him.
C. The more I meet him, the more I hate him.
D. The better I meet him, the better I hate him
.II. Give the suitable comparion to complete each sentence. (cho dạng so sánh đúng)
1. The weather today is……hottest…. than it was yesterday. ( hot )
2. The ……largest ….. city in Canada is Toronto. ( large )
3. This story is ………funnier….. than that one. ( funny )
4. I’m taking four classes. My history class is the ……most interesting…… of all.
( interesting )
5. The Pacific is ………deeper…. than the Mediterranean Sea. ( deep )
6. You can write …………better…… than I can ( well )
7. My father drives ………more carefully………. than I do. ( carefully )
8. Indonesia is……larger.. than Japan in population. ( large )
9. Mt. Everest is ………the highest…… mountain in the world. ( high )
10. _______ths older___ my grandparents get, ________the happier_____ they are. (old – happy)
11. ______the hotter____ it is, ________the weaker___ Hoa is. (hot – weak)
2 tháng 9 2021
sin 650=cos 350
\(cos70^0=sin30^0\)
\(tan80^0=cot20^0\)
\(cot68^0=tan32^0\)
9 tháng 9 2021
\(3,\\ a,\dfrac{\left(1+\sqrt{x}\right)^2-4\sqrt{x}}{1-\sqrt{x}}\\ =\dfrac{\sqrt{x}-2\sqrt{x}+1}{1-\sqrt{x}}=\dfrac{\left(1-\sqrt{x}\right)^2}{1-\sqrt{x}}=1-\sqrt{x}=1-\sqrt{2}\)
\(b,\dfrac{\left(\sqrt{x}-\sqrt{y}\right)^2+4\sqrt{xy}}{1+\sqrt{xy}}\\ =\dfrac{x+2\sqrt{xy}+y}{1+\sqrt{xy}}=\dfrac{\left(\sqrt{x}+\sqrt{y}\right)^2}{1+\sqrt{xy}}\\ =\dfrac{\left(\sqrt{2}+\sqrt{3}\right)^2}{1+\sqrt{6}}=\dfrac{5+2\sqrt{6}}{1+\sqrt{6}}\\ =\dfrac{\left(5+2\sqrt{6}\right)\left(\sqrt{6}-1\right)}{5}\\ =\dfrac{3\sqrt{6}+7}{5}\)
2 tháng 9 2017
A = 27.36+73.99+27.14-49.73
A=27(36+14)+73(99-49)
A=27.50+79.50
A=50(27+79)
A=50.100=5000
2 tháng 9 2017
27 . 36 + 73 . 99 + 27 . 14 - 49 . 73 = 27 . ( 36 + 14 ) + 73 . ( 99 - 49 )
= 27 . 50 + 73 . 50
= 50 . ( 73 + 27 )
= 50 . 100
= 5000
CHÚC BẠN HOK GIỎI :))
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