(A) is approximately halfway through its life as a yellow dwarf

(B) has been in existence for 10 billion years

(C) is rapidly changing in size and brightness

(D) will continue as a yellow dwarffor another 10 billion years

(A) Its atmosphere will freeze and become solid.

(B) It will be enveloped in the expanding surface of the Sun.

(C) It will become too hot for life to exist.

(D) It will be nearly destroyed by nova explosions.

(A) the same size as the planet Mercury

(B) thousands of times smaller than it is today

(C) around 35 million miles in diameter

(D) cold and dark

(A) Yellow dwarf, white dwarf, red giant, black giant

(B) Red giant, white dwarf, red dwarf, nova explosion

(C) Yellow dwarf, red giant, white dwarf, black dwarf

(D) White dwarf, red giant, black dwarf, yellow dwarf

(A) eject

(B) burn up

(C) convert

(D) let in

(A) our own planet

(B) the outer surface ofthe Sun

(C) the core of a black dwarf

(D) the planet Mercury

(A) Alarmed

(B) Pessimistic

(C) Comic

(D) Objective

(A) He was President at the time the Erie Canal was built.

(B) He was involved in pioneering efforts to build canals.

(C) He successfully opened the first canal in the United States.

(D) He commissioned engineers to study the possibility of building the Erie Canal

(A) profitability

(B) difficulty

(C) possibility

(D) capability

(A) Potomac and Ohio rivers

(B) Hudson River and Lake Erie

(C) Delaware and Potomac rivers

(D) Atlantic Ocean and the Hudson River

(A) Relatively

(B) Contrarily

(C) Incredibly

(D) Considerably

(A) Intermittent

(B) Unsolicited

(C) Ineffectual

(D) Gradual

(A) the state of New York

(B) private companies

(C) the federal government

(D) DeWitt Clinton

(A) five million dollars

(B) less than had been estimated

(C) seven million dollars

(D) more than could be repaid

(A) Jobs

(B) Grants

(C) Links

(D) Fees

(A) It allowed the East Coast to trade with the Great Lakes area.

(B) It took water traffic away from the Mississippi River.

(C) It helped determine the outcome of the Civil War.

(D) It established Boston and Philadelphia as the most important centers of trade.

(A) They were being planned but had not yet been built.

(B) They were seriously underdeveloped.

(C) They had begun to compete with the Erie Canal for traffic.

(D) They were weakened by the expansion of the canal.

(A) guaranteed

(B) justified

(C) hastened

(D) prevented

(A) Lines 3-5

(B) Lines 10-13

(C) Lines 16-18

(D) Lines 25-26

(A) The vibrations produced by insects

(B) The mission of the U.S. Forest Service

(C) The effect of insects on trees

(D) The sounds made by distressed trees

(A) trees

(B) scientists

(C) insects

(D) cries

(A) Burned

(B) Dehydrated

(C) Recovered

(D) Fallen

(A) signal

(B) condition

(C) need

(D) agony

(A) serve as a form of communication with other trees

(B) are the same no matter what type of tree produces them

(C) cannot be heard by the unaided human ear

(D) fall into the 1-20 kilohertz range

(A) long

(B) blocked

(C) hollow

(D) broken

(A) Torn roots

(B) Attacks by insects

(C) Experiments by scientists

(D) Lack of water

(A) Perceive

(B) Lift

(C) Transmit

(D) Attack

(A) thermal changes

(B) smells

(C) sounds

(D) changes in color

(A) had been conducted many years earlier

(B) had been unproductive up to then

(C) was continuing

(D) was no longer sponsored by the government

(A) A contrast is drawn between two concepts by means of examples.

(B) A general concept is introduced, examples are given, and a conclusion is offered.

(C) Two definitions of the same concept are compared.

(D) Two proposals are suggested and support for both is offered

(A) difficult to understand

(B) easier to understand through examples than through definitions

(C) impossible to explain

(D) simple to define but hard to apply

(A) inflexible

(B) ideal

(C) unnatural

(D) steep

(A) A shark's fin and a tiger's claws

(B) A man's arms and a bird's wings

(C) A monkey's tail and an elephant's tail

(D) A spider's legs and a horse's legs

(A) are genetically related

(B) are only found in highly developed animals

(C) perform the same general functions

(D) come from different embryological structures

(A) buildings

(B) features of an animal's anatomy

(C) organizational principles

(D) units of grammar

(A) feeling

(B) logic

(C) meaning

(D) perception

(A) Lines 2-4

(B) Lines 6-8

(C) Lines 9-1 1

(D) Lines 13-14

(A) criticize the factory system of the 1930's

(B) analyze an important film

(C) explain Chaplin's style of acting

(D) discuss how film reveals the benefits of technology

(A) a newspaper article

(B) a scene in a movie

(C) a job he had once held

(D) a conversation with a reporter

(A) suddenly

(B) mysteriously

(C) finally

(D) predictably

(A) is completely unforgettable

(B) takes place outside a factory

(C) is more critical than the other third

(D) entertains the audience more than the other third

(A) Getting fired

(B) Doing his job

(C) Going insane

(D) Falling behind

(A) The machine

(B) The food

(C) The assembly line

(D) The scene

(A) ingenuity

(B) adaptability

(C) helplessness

(D) independence

(A) Notable

(B) Complete

(C) Regrettable

(D) Necessary

(A) Revolutionary

(B) Entertaining

(C) Memorable

(D) Satirical