单选题The word "elicit" in line 18 is closest in meaning to
单选题The most important chemical catalyst on this planet is chlorophyll, ______carbon dioxide and water react to form carbohydrates. A. whose presence B. which is present C. presenting D. in the presence of which
单选题Among the most complexcrystals are that of silicon dioxide, which has seven different structures at various temperatures and pressures, the most common being quartz.
单选题The major purpose of the United States Department of Education are to ensure equal educational opportunity for all and to improve the quality of education.
单选题Birds usually (have very) well-developed sense of (sight), and the optic lobes of (their brains) are (correspondingly) large.
单选题___________ are chiefly derived from petroleum.
单选题1 A growing number of companies are finding that small-group discussions allow them to develop healthier ways to think about work. People at all levels of the corporate structure are starting groups that meet weekly or monthly to talk over ways to make workplaces more ethical and just. 2 Several factors must be present for small-group discussions to be successful. First, it is important to put together the right group. Groups work best when they consist of people who have similar duties, responsibilities, and missions. This does not mean, however, that everyone in the group must think in lockstep. 3 All participants should agree on the group's purpose. Finding the right subject matter is essential. There are several ways to fuel the discussion: by using the company's mission statement, by finding readings on work and ethics by experts in the topic, or by analyzing specific workplace incidents that have affected the company or others like it. 4 Finally, the dynamics of the group should be balanced, and the discussion leader must not be allowed to overwhelm the conversation or the agenda. Groups work best when the same person is not always in charge. It is better to rotate the leadership for each meeting and let that leader choose the material for discussion.
单选题Because (of the need) to maintain the correct balance of salts (and) minerals in the water, (keeping) saltwater fish in aquariums requires more work (that) keeping freshwater fish.
单选题Because they absorb heat from the environment rather than generate much of their own, reptiles are said to be ectotherms, a term identifying their major source of body heat as being external. Ectotherms heat directly with solar energy by basking in the sun, rather than through the metabolic breakdown of food, as in mammals and birds. This means that a reptile can survive on less than 10 percent of the calories required by a mammal of equivalent size. 2. Which sentence below best expresses the essential information in the highlighted sentence in the passage?
单选题
单选题(Between) 1905 and 1907, (floodwaters) from the Colorado River poured into (a) salt-covered depression (and creating) the Salton Sea.
单选题What is the lecture mainly about?
A. Research in pain management
B. The benefits of exercise
C. Why people have faith in doctors
D. The chemistry of the human brain
单选题______that life began billions of years ago in the water. A. It is believed B. In the belief C. The belief D. Believing
单选题Amanda Way's career as a social reformer____ in 1851 when, at an antislavery meeting in Indiana, she called for a state woman's rights convention.
单选题The purpose of the "guncotton" mentioned in paragraph 2 was to
(a) trap particles for analysis
(b) slow the process of putrefaction
(c) increase the airflow to the microscopic slide
(d) aid the mixing of alcohol and ether
单选题Settlers streamed into Connecticut River towns in so large numbers between 1765 and 1790 that they nearly doubled the population of Hampshire County, Massachusetts.
单选题
DADA AND POP ART1 Dada
was a subversive movement in the arts that flourished mainly in France,
Switzerland, and Germany from 1916 to 1923. Dada was based on the principles of
deliberate irrationality and anarchy. It rejected laws of
beauty and social organization and attempted to discover authentic reality
through the destruction of traditional culture and aesthetic
forms. The movement's founders included the French artist Jean Arp and the
writers Tristan Tzara and Hugo Ball. At a meeting of young artists in 1916 in
Zurich, one of them inserted a paper knife into a French-German dictionary. The
knife pointed to the word dada, a French baby-talk word for a
{{U}}hobby-horse{{/U}}, which the group saw as an appropriate term for their
anti-art. 2 Dada emerged from despair over the First World War
and disgust for the conservative values of society. Dada was the first
expression of protest against the war. Dadaists used absurdity to create
artworks that mocked society yet defied intellectual analysis, such as the use
of "found" objects in sculptures and installations. The {{U}}forerunner{{/U}} of the
Dadaists, and ultimately their leading member, was Marcel Duchamp, who in 1913
created his first "ready-made," the Bicycle Wheel, consisting of a
wheel mounted on the seat of a stool. In his effort to discourage aesthetics,
Duchamp shocked the art establishment with these ready- mades-manufactured
objects that he selected and exhibited-including a bottle rack and a comb. The
Dada movement extended to literature and music and became international after
the war. In the United States the movement was centered in New York City.
Dadaists on both sides of the Atlantic had one goal in common: to demolish
current aesthetic standards. 3 Fifty years after the Dadaists,
another generation of artists reacted to the standards and values of society.
However, instead of rejecting ordinary things, the young artists of the Pop
movement of the 1960s embraced {{U}}them{{/U}}. Pop artists were curious about the
commercial media of ads, billboards, newsprint, television, and all aspects of
popular culture. Thus, the barrier between "high" and "low" art collapsed, which
the Dadaists had aimed for and the Pop artists attained with an energy not seen
before. 4 Pop art received its name from critic Lawrence
Alloway, who considered Pop to be the culture of the mass media, photographs,
and posters-a style that must be popular, transitory, and witty. The subject
matter of Pop art was derivative, depicting something that had already been
published or produced, such as comic strips, soft-drink bottles, and photographs
of movie stars. {{U}}Pop art caught on quickly; it was art about mass consumption
that was eagerly consumed by the masses{{/U}}. 5 The most popular
of the Pop artists was the painter Roy Lichtenstein. Lichtenstein painted
enlarged copies.of the least "arty" things he could find: romance and adventure
comic strips. He was the first American artist to react to comic strips, finding
beauty in these crude designs, along with a distinct sense of style.
Lichtenstein also painted other pictorial styles, including blowups of other
artists' brushstrokes and parodies of Cubism and Art Deco. 6
Andy Warhol, more than any other Pop artist, {{U}}took on{{/U}} the mind-numbing
overload of American mass culture. Warhol began his career as a commercial
illustrator, and in 1962 he had his first exhibition in an art gallery, where he
showed his 32 Campbell's Soup Cans. The thirty-two soup cans are about
sameness: same brand, same size, same paint surface, and same fame. They mimic
the condition of mass advertising. All of Warhol's work flowed from one central
insight: mass culture is filled with images that become meaningless by being
repeated again and again, and in this {{U}}glut{{/U}} of information is a role for
art. Warhol felt this and embodied it. He conveyed a collective state of mind in
which celebrity-a famous brand name or the image of a famous person-had
completely replaced sacredness in art. Glossary:
anarchy: absence of any form of authority; disorder;
confusion aesthetic: relating to beauty;
artistic
单选题The invention of reinforced concrete, plate glass, and steel in the mid-1800's (was enabled) architects(to design) and build (extremely tall) constructions, (or) "skyscrapers."
单选题Listening6"BotanyClass"
单选题