_____heavily polluted outside air.
(A) than does
(B) more
(C) as some that at are
(D) like of
11 The decimal numeral system is one of the _____ways of expressing numbers.
(A) useful most world’s
(B) world’s most useful
(C) useful world’s most
(D) most world’s useful
12 EmiIy Dickinson’s garden was a place _____ great inspiration for her poems.
(A) that she drew
(B) by drawing her
(C) from which she drew
(D) drawn from which
13 The mountains surrounding Los Angeles effectively shield the city from the hot, dry winds of the Mojave Desert, _____ the circulation of air.
(A) but they also prevent
(B) also prevented by them
(C) and also to prevent
(D) and also preventing
14 Not only _____ to determine the depth of the ocean floor, but it is also used to locate oil.
(A) to use seismology
(B) is seismology used
(C) seismology is used
(D) using seismology
15 Nebraska has floods in some years, _____ .
(A) in others drought
(B) droughts are others
(C) while other droughts
(D) others in drought
16 Pop Art was a movement of the 1950’s and 1960’s whom imagery was based on readily
___________________
ABC
recognized American products and people.
_____
D
17 Because the tachinid fly is a parasite of harmful insects, much species have been imported
_____ ___________________
A BC
into the United States to combat insect pests.
_______
D
18 All almost the electricity forindustrial use comes from large generators driven by steam_______ ______ __ _______
A BC D