1.   When ouruniversity laboratory bought this microscope we were given a one year’s ______.
　　A.reservation  B. security  C. proof  D. guarantee
　　2. Don’t ______ about lunch for theinstructors, because they promised to get some on the way.
　　A.bother  B. fuse  C. trouble  D. think
　　3. Caracus has been called the Los Angeles of SouthAmerica; at _______ they look exactly the same.
　　A.short notice  B. first sight  C. first impression  D. first appearance
　　4. A Dictionary of the ...