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Mammals, like other creatures, ____ to their environment or perish. a) must either adapt b) can either adapted c) might either adapt d) have to either adapted
a
Adaptation ____ when an animal with traits suited to survival produces offspring. a) occurs b) occured c) will occur d) has occurred
a
Conversely, an organism with disadvantageous or harmful traits _____ fewer or no offspring. a) had b) have c) will have d) will have had
c
In his book On the Origin of Species, which ____ this theory, Darwin wrote: "The preservation of favorable individual differences and variations. a) outline b) outlines c) will outline d) had outlined
b
Instead, he ____ the term to refer to those members of a species that produce the largest number of surviving offspring. a) using b) used c) will use d) who used
b
These two animals _____ as one. a) are unfairly categorizing b) will be unfairly categorized c) have been unfairly categorized d) had been unfairly categorized
c
In this essay, I ______ people about the differences between these two large reptiles. a) told b) telling c) was telling d) will be telling
d
Hopefully, after reading this essay, readers _____ their opinions on these creatures! a) changed b) are changing c) have changed d) will change
d
First, people ____ to recognize the different shapes of their snouts. a) need b) needed c) are needing d) have needed
a
In contrast, crocodiles _____ mammals and small fish with their narrow snout. a) eat usually b) usually eat c) usually ate d) will usually eat
b
_____ that Marie Antoinette is the most famous queen of France. a) It says b) It said c) It is said d) It has said
c
In fact, she was born in Vienna, Austria, but ____ French royalty in order to unite France and Austria. a) married with b) had married to c) had to be married to d)had to be married with
c
The common people of France were not happy with the aristocracy so they started a revolution, but Antoinette was not _____ being in danger. a) worried for b) worrying for c) worrying about d) worried about
d
Antoinette _____ beautiful and interested in fashion. a) considered to be b) is considered to be c) was considered to be d) was considering to be
c
Antoinette at the beginning, they began to ____ being snobbish and too sympathetic to France´s enemies. a) accuse her of b) accuse her for c) be accused of her d) have been accused for
a
Having visited many countries, I would rather _____ in France than anywhere else. a) travel b) traveling c) traveled d) to travel
a
