在日常学习、工作或生活中，大家总少不了接触作文或者范文吧，通过文章可以把我们那些零零散散的思想，聚集在一块。范文怎么写才能发挥它最大的作用呢？下面是小编帮大家整理的优质范文，仅供参考，大家一起来看看吧。
托福全真试题集篇一
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6。 in his research at columbia university， charles townes worked with all of the following except
(a) stimulated emission
(b) microwaves
(c) light amplification
(d) a maser
7。in approximately what year was the first maser built?
(a) 1917
(b) 1951
(c) 1953
(d) 1957
8。 the word “emerged“ in line 20 is closest in meaning to
(a) increased
(b) concluded
(c) succeeded
(d) appeared
9。 the word “outlining“ in line 21 is closest in meaning to
(a) assigning
(b) studying
(c) checking
(d) summarizing
10。 why do people still argue about who deserves the credit for the concept of the laser?
(a) the researchers notebooks were lost。
(b) several people were developing the idea at the same time。
(c) no one claimed credit for the development until recently。
(d) the work is still incomplete。
panel painting， common in thirteenth -and fourteenth -century europe ， involved a painstaking ， laborious process。 wooden planks were joined， covered with gesso to prepare the surface for painting ， and then polished smooth with special tools。 on this perfect surface， the artist would sketch a composition with chalk， refine it with inks， and then begin the deliberate process of applying thin layers of egg tempera paint (egg yolk in which pigments are suspended) with small brushes。 the successive layering of these meticulously applied paints produced the final， translucent colors。
backgrounds of gold were made by carefully applying sheets of gold leaf， and then embellishing of decorating the gold leaf by punching it with a metal rod on which a pattern had been embossed。 every step in the process was slow and deliberate 。 the quick-drying tempera demanded that the artist know exactly where each stroke be placed before the brush met the panel， and it required the use of fine brushes。 it was， therefore ， an ideal technique for emphasizing the hard linear edges and pure， fine areas of color that were so much a part of the overall aesthetic of the time。 the notion that an artist couldorwould dash off an idea in a fit of spontaneous inspiration was completely alien to these deliberately produced works。
furthermore， making these paintings was so time-consuming that it demanded assistance。 all such work was done by collective enterprise in the workshops。 the painterormaster who is credited with having created painting may have designed the work and overseen its production， but it is highly unlikely that the artists hand applied every stroke of the brush。 more likely， numerous assistants， who had been trained to imitate the artists style， applied the paint。 the carpenters shop probably provided the frame and perhaps supplied the panel， and yet another shop supplied the gold。 thus， not only many hands ， but also many shops were involved in the final product。
in spite of problems with their condition， restoration， and preservation many panel paintings have survived， and today many of them are housed in museum
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