[单项选择]The two factors concerning hurricanes that scientists most want to learn about are ______.


A. conditions in the "eye" and conditions at the edge
B. the forces that generate them and theft frequency
C. the number of people injured and the amount of damage done
D. how fast and where they move

[单项选择]The two factors concerning hurricanes that scientists most want to learn about are ______.


A. conditions in the "eye" and conditions at the edge
B. the forces that generate them and theft frequency
C. the number of people injured and the amount of damage done
D. how fast and where they move

[单项选择]Which of the following factors concerning the electorate may NOT be considered in Gallup Poll


A. Social status.
B. Races.
C. Nationalities.
D. Intelligenc

[单项选择]

Two factors weigh heavily against the effectiveness of scientific research in industry. One is the general atmosphere of secrecy in which it is (21) , the other the lack of freedom of the individual research worker. (22) any inquiry is a secret one, it naturally limits all those engaged in carrying it out (23) effective contact with their fellow scientists either in other countries or in universities, or (24) ,often err)ugh, in other departments of the same firm. The degree of secrecy naturally (25) considerably. Some of the bigger firms are (26) in researches which am (27) such general and fundamental nature that it is a positive (28) to them not to keep them secret. (29) a great many processes depending on such research am sought for with complete secrecy (30) the stage at which patents can be (31) . Even more processes am never patented (32) but kept as secret processes.
A. attaining
B. acquiring
C. obtaining
D. achieving