18 . Teachers frequently become so engrossed in working with a specific group or an individual student _____
A however , they try to change the groups B that they fail to notice the potential problems stemming from the frustrated ones C no matter what the student thinks they go on giving much more homework D where they learn efficiently E in order to make them love the environment
19 . Except for the special circumstance in which historians record events they themselves have witnessed ,_____ .
A historical facts can only be known through intermediary sources these include testimony from narrative records , such as previous histories , memoirs , and
B letters technology has the goal of creating and improving systems to satisfy human wants or
C aspirations D there are two ways a university student can gather scientific information E the evidence might have been biased , mistaken or fragmentary
20 ._____ where the Great River cuts through soft sandstone .
A The . strange formations that have been carved out B The Wisconsin Dells in is in the region C The pets have names such as Devil ' s Elbow , Grand Piano and Fat Man ' s misery D The rocks are a delight to tourists E Abraham Lincoln was chosen president
CORRECT ANSWERS
1 ) |
B |
2 ) |
E |
3 ) |
D |
4 ) |
C |
5 ) |
D |
6 ) |
C |
7 ) |
D |
8 ) |
D |