During the    1    stages of design, creativity should be allowed to flourish without a great number of constraints. Even though many impractical ideas may   2, it is usually easy to eliminate them in the early stages of design before firm details are required by manufacturing. In this way, innovative ideas are not inhibited. Quite often, more than one design is developed,   3   to the point where they can be compared against each other. It is entirely possible that the design which is ultimately accepted will use ideas existing in one of the rejected designs that did not show   4    much overall promise.
Psychologists frequently talk    5    trying to fit people to the machines they operate. It is essentially the    6    of the design engineer to strive to fit machines to people. This is not an easy task,    7   there is really no average person for      8    certain operating dimensions and procedures are optimum.
Another important point which should be recognized is that a design engineer must be able to communicate ideas to other people if they are to be incorporated. Communicating the design to others is the final, vital step in the design process.     9     many great designs, inventions, and creative works have been lost to mankind simply because the originators were unable or   10    to explain their accomplishments to others. Presentation is a selling job. The engineer, when presenting a new solution to administrative, management, or supervisory persons, is attempting to sell or to prove to them that this solution is a better one. Unless this can be done successfully, the time and effort spent on obtaining the solution have been largely wasted.

1.   A. beginning       B. began       C. begun       D. begins             
2.   A. rise            B. raise        C. arise        D. arose         
3.   A. down           B. up         C. as          D. refer
4.   A. up              B. as         C. on          D. that
5.   A. on             B. over        C. about        D. through
6.   A. responsibility     B. responsible  C. response     D. respond
7.   A. that            B. however     C. why         D. since
8.   A. as             B. that          C. whom       D. which
9.   A. Doubtedly      B. Undoubtedly  C. Undoubted    D. Doubt
10.  A. willing          B.  willingly   C. unwilling     D. unwillingly

Key
1. A      2. C      3. B      4. B      5. C   
6. A      7. D      8. D      9. B      10. C