单选题听下面一段对话，回答第18至第21题。
单选题Questions 4-7 are based on a talk between a patient and a doctor.
单选题Whydidthewomantalktotheprofessor?A.Shewantshimtorecommendbooks.B.Shewantstoapplytograduatestudy.C.Shewantstotakeanadvancedcourse.D.Shewantshimtogiveheragoodgrade.
单选题
单选题Questions 8-10 are based on the following monologue.
单选题Whendoyouthinkthisconversationtookplace?A.Beforesix.B.Atsix.C.Aftersix.D.Afterseven.
单选题Howisthemantoday?
单选题What do we know about the cheese?
单选题WhendidMissWangmovetoherapartment?A.Aweekago.B.Acoupleofdaysago.C.Acoupleofweeksago.D.Acoupleofmonthsago.
单选题Directions: Read the following text. Choose
the best word or phrase for each numbered blank.
The rocket engine, with its steady roar like that of a waterfall or a
thunderstorm, is an impressive symbol of the new space age. Rocket engines have
{{U}} {{U}} 1 {{/U}} {{/U}}powerful enough to shoot astronauts
{{U}} {{U}} 2 {{/U}} {{/U}}the earth's gravitational pull and
{{U}} {{U}} 3 {{/U}} {{/U}}them on the moon. We have now become
{{U}} {{U}} 4 {{/U}} {{/U}}in space. Yuri Gagarin from Soviet
Union was the first human to visit space on April 12, 1961. In the 108 minutes'
journey, he covered 40,000 kilometers. China's first astronaut into space is
Yang Liwei. Impressive and complex {{U}} {{U}} 5 {{/U}} {{/U}}it
may appear, the rocket, which was {{U}} {{U}} 6 {{/U}} {{/U}}in
China over 800 years {{U}} {{U}} 7 {{/U}} {{/U}}, is a
relatively simple device. Fuel that is {{U}} {{U}} 8 {{/U}}
{{/U}}in the rocket engine changes {{U}} {{U}} 9 {{/U}} {{/U}}gas.
The hot and rapidly {{U}} {{U}} 10 {{/U}} {{/U}}gas must escape,
but it can do so only {{U}} {{U}} 11 {{/U}} {{/U}}an opening
that {{U}} {{U}} 12 {{/U}} {{/U}}backward. As the gas is
{{U}} {{U}} 13 {{/U}} {{/U}}with great force, it {{U}}
{{U}} 14 {{/U}} {{/U}}the rocket in the {{U}} {{U}} 15
{{/U}} {{/U}}direction. Like the kick of a gun {{U}} {{U}} 16
{{/U}} {{/U}}it is fired, it {{U}} {{U}} 17 {{/U}} {{/U}}the
laws of nature {{U}} {{U}} 18 {{/U}} {{/U}}by Sir Isaac Newton
when he discovered that "{{U}} {{U}} 19 {{/U}} {{/U}}every
action, there is {{U}} {{U}} 20 {{/U}} {{/U}}equal and opposite
reaction." Newton's theories have contributed a great deal to the science of
aeronautics.
单选题
The United States is a confederation of
states. Each state has the{{U}} (26) {{/U}}to make laws with regard to
the state. {{U}}(27) {{/U}}, based on public opinion, states can{{U}}
(28) {{/U}}policies regarding education, and they may{{U}} (29)
{{/U}}a state income tax; they also determine the speed{{U}} (30)
{{/U}}, housing codes, and the drinking age. In most parts
of the United States, you{{U}} (31) {{/U}}be 21 years old to buy alcohol
in a liquor store, bar,{{U}} (32) {{/U}}restaurant. In some states you
may buy beer in a grocery store. If a store sells alcohol to a minor, the{{U}}
(33) {{/U}}of the store is usually{{U}} (34) {{/U}}a large sum
of money.{{U}} (35) {{/U}}, many areas have an open-container law,{{U}}
(36) {{/U}}means that people may not drink alcohol on the street or in
a car. Anyone{{U}} (37) {{/U}}with an open container of alcohol may be
arrested. {{U}}(38) {{/U}}, with all of these laws,
the{{U}} (39) {{/U}}of alcohol is a serious{{U}} (40) {{/U}}in
the United States and Canada. Drinking on college campuses,{{U}} (41)
{{/U}}there are many underage drinkers has{{U}} (42) {{/U}}greatly.
In fact, alcohol sales have gone up{{U}} (43) {{/U}}the legal drinking
age was{{U}} (44) {{/U}}from 18 to 21. Some people believe that if there
were no legal drinking age,{{U}} (45) {{/U}}in some other countries,
North American youth would drink less.
单选题Whendoesthisconversationmostprobablytakeplace?A.Atthebeginningofthesemester.B.Atthemiddleofthesemester.C.Duringthevacation.D.Attheendofthesemester.
单选题From childhood to old age, we all use language as a means of broadening our knowledge of ourselves and the world about us. When humans first (26) , they were like newborn children, unable to use this (27) tool. Yet once language developed, the possibilities for mankind's future (28) and cultural growth increased. Many linguists believe that evolution is (29) for our ability to produce and use language. They (30) that our highly evolved brain provides us (31) an innate language ability not found in lower (32) . Proponents of this innateness theory say that our (33) for language is inborn, but that language itself develops gradually, (34) a function of the growth of the brain during childhood. Therefore there are critical (35) times for language development. Current (36) of innateness theory are mixed; however, evidence supporting the existence of some innate abilities is undeniable. (37) , more and more schools are discovering that foreign languages are best taught in (38) grades. Young children often can learn several languages by being (39) to them, while adults have a much harder time learning another language once the (40) of their first language have become firmly fixed. (41) some aspects of language are undeniably innate, language does not develop automatically in a vacuum. Children who have been (42) from other human beings do not possess language. This demonstrates that (43) with other human beings is necessary for proper language development. Some linguists believe that this is even more basic to human language (44) than any innate capacities. These theorists view language as imitative, learned behavior. (45) , children learn language from their parents by imitating them. Parents gradually shape their child's language skills by positively reinforcing precise imitations and negatively reinforcing imprecise ones.
单选题One can conclude from the passage that if a woman takes on several social roles, _______.
单选题[此试题无题干]
单选题
单选题HowoftenisHalloween?
单选题Professor Martin stated that ______.
单选题
单选题{{I}}Questions 14-17 are based on the following dialogue about a job interview.{{/I}}