[单项选择]In spite of______among a few scientists, and years of______discussion, the claim that earthquakes can be predicted with great precision prevails.
A. antipathy … favorable
B. skepticism … contentious
C. mutualism … polite
D. receptiveness … intelligent
E. popularity … rancorous

[填空题]Scientists have spent years _____ into the effects of certain chemicals on the human brain with no result.

[单项选择]In spite of thousands of years of endeavor, little progress has been made in the scientific understanding of dreams. This fact has been so universally acknowledged by previous writers on the subject that it seems hardly necessary to quote individual opinions. The reader will find, in many stimulating observations, and plenty of interesting material related to our subject, but little or nothing that concerns the true nature of the dream, or that solves definitely any of its enigmas. The educated layman, of course, knows even less of the matter.
The conception of the dream that was held in prehistoric ages by primitive peoples, and the influence which it may have exerted on the formation of their conceptions of the universe, and of the soul, is a theme of such great interest that it is only with reluctance that I refrain from dealing with it in these pages. I will refer the reader to the well-known works of Sir John Lubbock (Lord Avebury), Herbert Spencer, E. B. Tylor and other wr
A. few writers did research on the subject of dream
B. previous researchers were short of observations and material related to dream
C. little progress was achieved on the nature of dream
D. educated public hold a better understanding of dream

[单项选择] Interferon For several years, scientists have been testing a substance called interferon (干扰素),a potential wonder drug that is proving to be effective in treating a variety of ailments, including virus infections, bacteria infections, and tumors. To date, the new drug has provoked no negative reaction of sufficient significance to discourage its use. But in spite of its success, last year only one gram was produced in the entire world. The reason for the scarcity lies in the structure of interferon. A species specific protein, the interferon produced from one animal species cannot be used in treating another animal species. In other words, to treat human beings, only interferon produced by human beings may be used. The drug is produced by infecting white blood cells with a virus. Fortunately, it is so potent that the amount given each patient per injection is very small. Unlike antibiotics(抗菌素), interferon does not attack germs directly
A. Right
B. Wrong
C. Not Mentioned