[单项选择]The bones, tendons and cartilages require a small amount of blood, ______ such organs as the kidneys and brain need large amounts of blood.
A. as
B. while
C. because
D. so that

[单项选择]Most embedded clauses require an introductory word called a subordinator, such as "that, until, before, ______, "and so on.
A. so
B. if
C. for
D. but

[单项选择]Primitive monetary systems require the same balance of supply and demand that ______the U.S. Treasury and the Federal Reserve System.
A. confirms
B. confronts
C. conducts
D. confesses

[单项选择]

Most worthwhile careers require some kind of specialized training Ideally, therefore, the choice of an (21) should be made even before the choice of a curriculum in high school. Actually, (22) , most people make several job choices during their working lives, (23) because of economic and industrial changes and partly to improve (24) position. The "one perfect job" does not exist. Young people should (25) enter into a broad flexible training program that will (26) them for a field of work rather than for a single (27)
Unfortunately many young people have to make career plans (28) benefit of help from a (29) vocational counselor or psychologist. Knowing (30) about the occupational world, or themselves for that matter, they choose their lifework on a Mt-or-miss (31) . Some drift from job to job. Others (32) to work in which they are unhappy and (33) wh
A. For
B. Since
C. Though
D. As if

[单项选择]Just as there are occupations that require college or even higher degrees, ______ occupations for which technical training is necessary.
A. so too there axe
B. so also there are
C. so there are too
D. so too are there

[单项选择]Why does the professor mention bones and shells


A. To give an example of natural shapes.
B. To describe early sculpture.
C. To illustrate their use as tools.
D. To demonstrate their role as decorative objects.

[单项选择]What does Mr. Cruise require of the woman


A. An exchange of the video recorder for a new one.
B. A refund of the video recorder and two tapes.
C. A repair of the video recorder and compensation for his tapes.
D. An immediate apology for the service.

[单项选择]According to the passage, what material is required for lithography
A. Rugged bark.
B. Coarse canvas.
C. Crinkled aluminum foil.
D. Smooth metal plate.

[单项选择]The muscles that connect the two bones are clearly under a ______ amount of tension.
A. colossal
B. titanic
C. mammoth
D. grand

[单项选择]When do some people have pains in their bones


A. When there is a heavy rain.
B. When fine weather continues.
C. When there is a fog.
D. When wet weather is comin

[单项选择]The author refers to the increase in animal bones in the fourth paragraph primarily in order to

[单项选择]Which of the following can help a person's bones become strong
A. Putting much money in the bank.
B. Getting the right kind of bone-building nutrition and exercise.
C. Snack on chips or slurp soda instead of thinking about vitamins.
D. Standing by the elevator.

[单项选择]Why are some muscles attached to bones at an angle
A. To cause the muscles to push.
B. To strengthen the muscles.
C. To shorten tissues.
D. To perform a turning action.