MCAT English (Reading Comprehension) for Medical College Aptitude Test Preparation (Part V)
Medical College Entry Test (MCAT) Online Preparation from Topic "Reading Comprehension" (03 Passages and 10 Questions)
Passage #1
Criticism of research lays a significant foundation for future investigative work, but when students begin their own projects, they are likely to find that the standards of validity in field work are considerably more rigorous than the standards for most library research. When students are faced with the concrete problem of proof by field demonstration, they usually discover that many of the "important relationships" they may have criticized other researchers for failing to demonstrate are very elusive indeed. They will find, if they submit an outline or questionnaire to their classmates for criticism, that other students make comments similar to some they themselves may have made in discussing previously published research. For example, student researchers are likely to begin with a general question but find themselves forced to narrow its focus. They may learn that questions whose meanings seem perfectly obvious to them are not clearly understood by other, or those questions that seemed entirely objective to them appear to be highly biased to someone else. They usually find that the formulation of good research questions is a much more subtle and frustrating task than is generally believed by those who have not actually attempted it.
Passage #2
The scientific name of the koala is Phascolarctos cinereous, from the Greek for “Pouched bear" and "ash gray." The koala lives in trees, specifically in some 35 of the more than 600' species of the genus Eucalyptus that grow in Australia. The diet of the adult koala is almost exclusively eucalyptus leaves. However, the oils of eucalyptus leaves are toxic to most other mammals.
Passage #3
Droplets and ice crystals behave somewhat like dust in the air made visible in a shaft of sunlight. To the casual observer, dust seems to act in a totally random fashion, moving about chaotically without fixed direction. But in fact dust particles are much larger than water droplets and they finally fall. The average cloud droplets only 1/16 inch in diameter. It is so small that it would take sixteen hours to fall half a mile in perfectly still air, and it does not fall out of moving air at all. Only when the 1/125 droplet grows to a diameter of an inch or larger can it fall from the cloud. The average contains a million times as much better as a tiny cloud droplet. The growth of a cloud droplet to a size large enough to fall out is the cause of rain and other forms of precipitation. This important growth process is called "coalescence."
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