Passage Reading and English Comprehension
(a) explain the difference between natural and man-made radiation
(b) arouse concern about the risks connected with exposure to radiation
(c) criticize the United Nations Scientific Committee on the Effects of Atomic Radiation
(d) advocate limiting the use of atomic weapons testing, since the fallout is extremely hazardous
116. Which of the following, according to the passage, is a list of three natural sources of radiation?
(a) Radioactive potassium in bone, strontium 90, uranium ore
(b) Carbon 14 in tissues, cosmic rays, X rays
(c) Cosmic rays, radioactive potassium in bones, radioactive carbon in tissues
(d) Plutonium, radioactive material in rock, strontium 90
117. Which of the following does the author cite in support of the quotation from the United Nations Scientific Committee on the Effects of Atomic Radiation
I. Strontium 90 and carbon 14 become incorporated into the body and deliver radiation for an entire lifetime.
II. An abnormally high percentage of patients with arthritis of the spine who were treated with X rays subsequently contracted cancer.
III. A high incidence of cancer appeared among children of mothers who had been given prenatal pelvic X rays.
(a) I only
(b) II only
(c) I and II only
(d) II and III only
118. The passage contains information that answers which of the following questions?
(a) How many millirems of radiation from man-made sources is the average person exposed to each year?
(b) Is exposure to radiation linked to any other diseases besides cancer?
(c) How many types of radiation are there?
(d) Why is exposure to the fallout from weapons testing considered by some to be more hazardous than exposure to X rays?
119. According to the passage, some scientists believe that a dose of one rem of radiation continued over a period of generations would
(a) raise the strontium 90 levels in the body but otherwise have little effect
(b) relieve the acute suffering of those afflicted with arthritis of the spine without side effects
(c) have the effect of increasing by 1 percent the cases of serious genetic defects
(d) have little impact on the regulatory efforts of federal agencies
120. It can be inferred from the last paragraph of the passage that the chairperson who resigned from the panel to develop a coordinated federal program for radiation regulation most likely did so because
(a) he or she disagreed with the findings of the Senate committee
(b) his or her agency could not obtain funding or manpower for implementation of existing laws
(c) he or she supported the position of the National Academy of Sciences committee and opposed regulation of radiation exposure
(d) regulatory efforts have been balked by disputes, confusion, and bureaucratic delays
121. The passage contains evidence suggesting that it was most likely written
(a) in 1958
(b) for the journal of the National Academy of Sciences
(c) by a lobbyist for the defense industry
(d) in the late 1970s
122. The passage implies that each of the following statements about radiation has been disputed EXCEPT?
(a) Even small doses of radiation are likely to cause birth defects.
(b) Exposure to low-linear energy transfer presents only a minor risk.
(c) Many small doses of radiation are as harmful as a single large dose.
(d) Humans can tolerate a certain amount of radiation.
Download Free EBooks for GMAT, GRE, ACT, SAT, LSAT, MCAT etc.
Tell Your Freind