VERIFIED QUESTIONS AND DETAILED SOLUTIONS
The lens of the eye focuses light rays as they enter the eye.
Muscles around the lens react to light and change the shape of
the lens by expanding or contracting. Certain diseases or
injury to the lens of the eye can result in blurry vision.
According to the paragraph,the lens of the eye is used to
Focus light
Your heart's mitral valve does an awfully big job. Letting blood
from the left atrium of the heart into the left ventricle without
losing a drop is one of the toughest tasks in the circulatory
system. In fact, if the system was suddenly opened at that
point the force of the valve closing with send blood 5 feet into
the air in this passage the author's purpose is to?
Convince the readers of the stress on the mitral valve
Riding the mail plane is a low-budget way to visit america's
largest national park--wrangell-st.elias-- 13 million acres of
scenic beauty. Copper first drew prospectors to this part of
alaska. From 1911 to 1938, the kennicott mine produced 200
million tons of it. Now a mecca for tourists, the town of
kennicott was abandoned to the ghosts when the copper ran
,out. Which of the following illustrates the correct sequence of
events?
Copper drew prospectors, copper ran out, town abandoned,
tourists attraction
Physicists seek out those features of nature that are simple
and universal. The secret of their success is not so much a
matter of finding answers as it is asking the right questions.
The trick is keeping the questions simple and sticking to
universal phenomena. Simple questions can be answered
unambiguously by careful observation of repeated
experiments and by logical thinking. Which of the following
questions is most clearly an example of the kind discussed in
the paragraph?
How fast do stones of a particular size fall?
An allergy is a hypersensitivity to substances that are
essentially harmless. For as yet poorly understood reasons,
the immune system malfunctions and marshals up an army of
antibodies to fight these substances. For many allergies, this
malfunction causes a large amount of histamine to flood into
the bloodstream. It is overabundance of histamine that causes
allergic symptoms such as headaches, rashes, and sneezing.
The passage states all of the following about allergies except
Medical science does not fully understand why the body has an
allergic reaction to certain substances
, A period of time is usually measured by comparing it with
another period of time.for example, a year on mercury is equal
to 88 earth days. A year on uranus is approximately 348
mercury years. According to the passage, the way time is
usually measured shows that the time is
Calendar-based
Weather radar is a great help to pilots in detecting
thunderstorms. However, pilots must be aware that radar
does not reliably detect hail. Radar operates by transmitting a
pulse of radio energy and receiving the pulse again after it is
reflected by a target. Large raindrops, the kind found in
intense thunderstorms, are the best radar reflectors and will
show up as intense targets on the screen. Hail is somewhat
porous and has an uneven structure; it tends to absorb or
scatter the radar pulse rather than reflect it back to the
antenna. According to the paragraph, weather radar does not
reliably. Detect hail because of
Its penetrable surface
According to mark twain, october is a particularly dangerous
month to speculate in stocks. Others include july, january,