A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 34 to 40
Some Russian women became well-known fighter pilots during the Second World War. Yekaterina Budanova was one of them. She joined the Soviet Army and became a lighter pilot after working as a non-military pilot. At first, Budanova's officer didn't believe in her ability. But in a short time Budanova became famous for her talent and remarkable flying skills. Unfortunately, she died at the age of 26 in air-to-air fighting against German planes although she already shot down one plane and hit a second before being shot down herself.
Interested in flying at an early age, Lydia Ultvyak joined a flying club and performed her first solo flight at the age of 15. She became a fight instructor after graduating from the military flying school. After the German attack on the Soviet Union in 1941. Utvyak joined the Soviet Air Force and soon achieved great success. Like Budanova, she was killed (at the age of 21) in fighting against German planes. And along with Yekaterina Budanova Lydia Utvyak is often considered one of the world's most famous female fighter pilots.
Question 34. Which of the following best serves as the title of the text?
A. Russian Female Fighter Pilots B. Female Fighter Pilots Who Made History
C. Women during the Second World War D. Fighting the Germans
Question 35. The fact that Litvyak had her first solo flight when she was only 15 implies that __________.
A. it was a risky thing to do B. she loved danger
C. she had a natural talent for flying D. her flying club was the best in the world
Question 36. What did Budanova do before she become a fighter pilot?
A. She worked at a flying club. B. She was a Russian officer.
C. She worked as a non-military pilot. D. She shot down German planes.
Question 37. The word 'solo' in paragraph 2 is opposite meaning to ________.
A. done by one person alone B. successful
C. done by more than one person D. single
Question 38. The phrase "a second" in paragraph 1 refers to _______.
A. the Second World War B. a second German plane
C. a second Russian plane D. a fighter pilot
Question 39. The word "them" in paragraph 1 refers to_______.
A. fighter pilots B. well-known fighter pilots
C. some Russian women D. women
Question 40. Which of the following is NOT true about Budanova and Uitvyak, according to the text?
A. They died in their twenties.
B. They died when the Second World War was over.
C. They were talented and successful female fighter pilots in the Soviet Air Force.
D. They are considered two of the world's most famous female fighter pilots.
a: Xét ΔBHA vuông tại H và ΔBAC vuông tại A có
\(\widehat{HBA}\) chung
Do đó: ΔBHA~ΔBAC
=>\(\dfrac{BH}{BA}=\dfrac{BA}{BC}\)
=>\(BA^2=BH\cdot BC\)
b: Xét ΔAMH vuông tại M và ΔAHB vuông tại H có
\(\widehat{MAH}\) chung
Do đó: ΔAMH~ΔAHB
=>\(\dfrac{AM}{AH}=\dfrac{AH}{AB}\)
=>\(AM\cdot AB=AH^2\)
Xét ΔANH vuông tại N và ΔAHC vuông tại H có
\(\widehat{NAH}\) chung
Do đó: ΔANH~ΔAHC
=>\(\dfrac{AN}{AH}=\dfrac{AH}{AC}\)
=>\(AN\cdot AC=AH^2\)
Do đó: \(AM\cdot AB=AN\cdot AC\)
=>\(\dfrac{AM}{AC}=\dfrac{AN}{AB}\)
Xét ΔAMN vuông tại A và ΔACB vuông tại A có
\(\dfrac{AM}{AC}=\dfrac{AN}{AB}\)
Do đó: ΔAMN~ΔACB
c: O là trung điểm của BC
mà ΔABC vuông tại A
nên OA=OB=OC
OA=OC nên ΔOAC cân tại O
ΔANM~ΔABC
=>\(\widehat{ANM}=\widehat{ABC}\)
\(\widehat{ANM}+\widehat{OAC}=\widehat{ACB}+\widehat{ABC}=90^0\)
=>MN\(\perp\)AO tại I