What did you learn from this lesson?

प्रश्न

एक पंक्ति में उत्तर

उत्तर

We should be active and not lazy.

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क्या इस प्रश्न या उत्तर में कोई त्रुटि है?

Q C. 5.Q C. 4.Q D.

अध्याय 1.1: The Trick Robot - Let Us Understand [पृष्ठ ८२]

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सामाचीर कलवी English - Term 1 Class 4 TN Board

अध्याय 1.1 The Trick Robot
Let Us Understand | Q C. 5. | पृष्ठ ८२

संबंधित प्रश्न

We sang our school fight song dozens of times – en route to Arlington National cemetery, and even on an afternoon cruise down the Potomac River. We visited the Lincoln Memorial twice, once in day – light, the second time at dusk. My classmates and I fell silent as we walked in the shadows of those 36 marble columns, one for every state in the Union that Lincoln laboured to preserve. I stood next to Frank at the base of the 19 foot seated statue. Spotlights made the white Georgian marble seem to glow. Together we read famous words from Lincoln’s speech at Gettysburg remembering the most bloody battle in the war between the status : “………….we here highly resolve that these dead shall not have died in vain – that this nation, under God, shall have a new birth of freedom………..”
As Frank motioned me into place to take my picture, I took one last look at Lincoln’s face. He seemed alive and so terribly sad.
The next morning I understand a little better why he wasn’t smiling. “Clifton,” a chaperone said, “could I see you for a moment?”

(1) When did the boys visit Lincoln Memorial?
(2) What made the Georgian marble glow?
(3) What did the words: “………. We here highly resolve that these dead shall not have died in vain – that this nation, under God, shall have a new birth of freedom …………” remind them?
(4) Do you believe in building memorials? What kind should they be, if your answer is ‘yes’? If no, give reasons why you do not believe in memorials?

Read the passage and complete the activities given below :
B1 Pick out
The correct answers from the statements given below:

(i) All parts of the human body receive blood from the:

(a) lungs (b) heart (c) stomach (d) liver

(ii) The portion of the heart which doesn’t receive proper blood supply becomes:

(a) strong (b) dead (c) weak (d) diseased

(iii) Angina results from the weakening of the:

(a) heart (b) liver (c) stomach (d) lungs

(iv) The heart receives its own blood supply through the:

(a) veins (b) lumen (c) fat (d) coronary arteries

Coronary bypass surgery is undoubtedly a very significant achievement of modern medical science. But one ponders over certain pertinent questions such as the cost involved and the ultimate benefit.

The human heart is nothing but a four-chambered muscular pump that supplies blood to all parts of the body. Being an active pump, the heart itself requires a lot of energy and receives its own blood supply via certain vessels called coronary arteries. By a process called “atherosclerosis”, fat particles are deposited on the inner wall of the lumen of the coronary arteries which eventually reduce the size of the lumen and produce obstruction to the free flow of blood. The portion of the heart which suffers from lack of blood supply becomes weaker as a pump and gives rise to a typical chest pain called “angina”. When such blockage is total, the corresponding heart muscle dies and then one suffers a “heart attack”. In all these circumstances, heart surgeons perform a special type of operation known as “coronary bypass surgery”.

In this surgery, a blood vessel is taken (usually from the leg of the patient) and then grafted on the heart in such a way that when blood flows through, it bypasses the narrow segment of the diseased coronary artery. The concept is to divert the flow from the narrow artery, inside which there is already a ‘traffic congestion’ and in this respect, it is synonymous with road bypass.