Directions: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre. You may not use any of the words in the bank more than once.
As the horizons of science have expanded, two main groups of scientists have emerged. One is the pure scientist; the other, the applied scientist.
The pure or theoretical scientist does 1 research in order to understand the basic laws of nature that govern our world. The applied scientist 2 this knowledge to practical problems. Neither is more important than the other, however, for the two groups are very much related.
Sometimes, however, the applied scientist finds the "problems" for the theoretical scientist to work on. Let’s take a 3 problem of the aircraft industry: heat-resistant metals. Many of the metals and alloys which perform 4 in a car cannot be used in a jet-propelled plane. New alloys must be used, because the jet engine operates at a much higher temperature than an automobile engine. The engine must 5 temperatures as high as 2,600 degrees Fahrenheit, so aircraft designers had to turn to the research metallurgist (冶金学家) for the 6 of metals and alloys that would do the job in jet-propelled planes.
Dividing scientists into two groups—pure and applied—is only one broad way of classifying them, 7 . When scientific knowledge was very limited, there was no need for men to 8 . Today, with a great body of scientific knowledge, scientists specialize in many different fields. Within each field, there is even further subdivision (细分). And with finer and finer subdivisions, the various sciences have become more and more interrelated until no one branch is 9 independent of the others. Many new 10 —geophysics (地球物理学) and biochemistry, for example—have resulted from combining the knowledge of two or more sciences.
A. particular I. satisfactorily
B. however J. withdraw
C. deregulation K. development
D. adapts L. terrific
E. entirely M. original
F. adopts N. specialize
G. withstand O. respectively
H. specialties Directions:Answer Sheet 2