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tung1410
2 năm trước
Nguyên tử của nguyên tố X có tổng số hạt trong nguyên tử là 47 hạt. Trong đó số hạt mang điện gấp 1,8 lần số hạt không mang điện a) Tìm p,n,e(Proton,nơtron,electron) b)viết cấu hình electron của X
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The Hollywood sign in the hills that line the northern border of Los Angeles is a famouslandmark recognized the world over. The white - painted, 50-foot-high, sheet mental letterscan be seen from great distances across the Los Angeles basin.The sign was not constructed, as one might suppose, by the movie business as a meansof celebrating the importance of Hollywood to this industry; instead, it was first constructed in1923 as means of advertising homes for sale in a 500-acre-housing subdivision in a part of LosAngeles called "Hollywood land". The sign that was constructed at time, of course, said"Hollywood land". Over the years, people began referring to the area by shorten version"Hollywood" and after the sign and its sign were donated to the city in 1945, the last fourletters were removed.The sign suffered for years of disrepair, and in 1973, it needed to be completelyreplaced, at a cost of $ 27,700 per letter. Various celebrities were instrumental in helping toraise needed funds. Rock star Alice Cooper, for example, bought an O in memory of GrouchoMarx, and Hugh Hefner of playboy fame held a benefit party to raise the money for the Y. Theconstruction of the new sign was finally completed in 1978. 1. What is the topic of this passage? A. A famous sign B. A famous city C. World landmark D. Hollywood versus Hollywood land 2. The expression "The world over" in line two could best replaced by ________. A. in the northern parts of the world B. on top of the world C. in the entire world D. in the skies 3. It can be inferred from the passage that most people think that the Hollywood sign was firstconstructed by _________. A. an advertising company B. the movie industry C. a construction company D. the city of Los Angeles 4. The pronoun "it" in line 5 refers to __________. A. the sign B. the movie business C. the importance of Hollywood D. this industry 5. According to the passage, the Hollywood sign was first built in _________. A. 1923 B. 1949 C. 1973 D. 1978 6. Which of the following is NOT mentioned about Hollywood land? A. It used to be the name of an area of Los Angeles. B. It was formerly the name of the sign in the hills. C. There were houses for sale there. D. It was the most expensive area of Los Angeles. 7. The passage indicates that the sign suffered for years of _________. A. being damaged B. not being fixed C. the bad weather D. being poorly constructed 8. How old was the Hollywood sign when it was necessary to replace it completely? A. Ten years old B. Twenty-six years old C. Fifty years old D. Fifty-five years old 9. The word "replaced" is closest in meaning to which of the following? A. Moved to a new location B. Destroyed C. Found again D. Exchanged for a newer one 10. According to the passage, how did celebrities help with the new sign? A. They played instruments. B. They raised the sign. C. They helped get the money. D. They took party in the work parties to build the sign. Giúp em với ạ, trước 6h30 nhé :((( Nhanh nhất sễ được ctlhn ạ

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