This article, the purpose of which is to deal with some problems in studying and teaching English, is merely for the students of English to read, who have just entered the second year at a foreign languages institute....This article, the purpose of which is to deal with some problems in studying and teaching English, is merely for the students of English to read, who have just entered the second year at a foreign languages institute. When teaching the second-year students, I have often been asked this awkward question: "What do you think is the correct way to study English?" It took me quite a time to answer it. Now after many years of teaching I think I have some ideas on this subject.展开更多
The reliability of fingerprint has been called into question by a study that tested whether forensic experts make consistent judgments on print matches.Despite the perceived infallibility of fingerprint evidence, the ...The reliability of fingerprint has been called into question by a study that tested whether forensic experts make consistent judgments on print matches.Despite the perceived infallibility of fingerprint evidence, the study found that experts do not always make the same judgment on whether a print matches a mark at a crime scene when presented with the same evidence twice.The findings come in the wake of two high profile cases in which fingerprint matches were subsequently shown to be wrong. The Scottish ...展开更多
Astronomy is an observation-driven science that utilizes telescopes to obtain information from the universe in order to study the most fundamental scientific questions in the universe.The aperture of the telescope det...Astronomy is an observation-driven science that utilizes telescopes to obtain information from the universe in order to study the most fundamental scientific questions in the universe.The aperture of the telescope determines the number of photons received per second and,therefore,the sensitivity and angular resolution ofthe telescope so people can see farther,and itis possible to see fainter objects in the deep universe with a larger-aperture telescope.At present,there are 19 optical astronomical telescopes in the world whose apertures are larger than 6 m,and 14 of them are in the 8-to 10-m class with a maximum aperture of about 10 m,including two Keck telescopes and the Hobby-Eberly Telescope in the United States,the Gran Telescopio Canarias in Europe,and Southern African Large Telescope in South Africa.Most of these telescopes are general-purpose optical telescopes.These telescopes are mainly owned by the United States,Europe,and Japan and are installed in America,Europe,and Africa,while Asia still does not have a single big telescope so far.展开更多
文摘This article, the purpose of which is to deal with some problems in studying and teaching English, is merely for the students of English to read, who have just entered the second year at a foreign languages institute. When teaching the second-year students, I have often been asked this awkward question: "What do you think is the correct way to study English?" It took me quite a time to answer it. Now after many years of teaching I think I have some ideas on this subject.
文摘The reliability of fingerprint has been called into question by a study that tested whether forensic experts make consistent judgments on print matches.Despite the perceived infallibility of fingerprint evidence, the study found that experts do not always make the same judgment on whether a print matches a mark at a crime scene when presented with the same evidence twice.The findings come in the wake of two high profile cases in which fingerprint matches were subsequently shown to be wrong. The Scottish ...
文摘Astronomy is an observation-driven science that utilizes telescopes to obtain information from the universe in order to study the most fundamental scientific questions in the universe.The aperture of the telescope determines the number of photons received per second and,therefore,the sensitivity and angular resolution ofthe telescope so people can see farther,and itis possible to see fainter objects in the deep universe with a larger-aperture telescope.At present,there are 19 optical astronomical telescopes in the world whose apertures are larger than 6 m,and 14 of them are in the 8-to 10-m class with a maximum aperture of about 10 m,including two Keck telescopes and the Hobby-Eberly Telescope in the United States,the Gran Telescopio Canarias in Europe,and Southern African Large Telescope in South Africa.Most of these telescopes are general-purpose optical telescopes.These telescopes are mainly owned by the United States,Europe,and Japan and are installed in America,Europe,and Africa,while Asia still does not have a single big telescope so far.
