Marie and Pierre Curle were both winners of the Nobel Prize in physics. This prize is one of the highest any scientist can receive. Their daughter, Irene, also recelved a Nobel Prize in chemistry. The Curies were a remarkable family. Pierre Curle was already a famous scientist when he
met Marle, who had fled from Poland. Together they discovered polonlum and radium, two elements that are important in modern industry. Pierre
Curie was killed in an accident, but Marle carried on scientific research until she died in 1934.
What is the main idea of this paragraph?
O 1. the importance of Pierre and Marie Curie's studies
2. the importance of winning the Nobel Prize
O 3. the achievements of the outstanding Curle family
O 4. Marie Curle's desperate escape from Poland

Which word best describes the author's tone in this excerpt from "that spot" by jack london? i don’t think much of stephen mackaye any more, though i used to swear by him. i know that in those days i loved him more than my own brother. if ever i meet stephen mackaye again, i shall not be responsible for my actions. it passes beyond me that a man with whom i shared food and blanket, and with whom i mushed over the chilcoot trail, should turn out the way he did. i always sized steve up as a square man, a kindly comrade, without an iota of anything vindictive or malicious in his nature. i shall never trust my judgment in men again. why, i nursed that man through typhoid fever; we starved together on the headwaters of the stewart; and he saved my life on the little salmon. and now, after the years we were together, all i can say of stephen mackaye is that he is the meanest man i ever knew. a. excited b. ironic c. indignant d. playful

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“generally, however, the term robot refers to any machine that is able to perform a complex task on its own, but whose actions or tasks are controlled by human programming.”