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【单选题】
The number of stars in the universe appears to be infinite.
A.
amazing
B.
limitless
C.
limited
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】The survival of a species from one generation to the next depends on many factors.
A.
endurance
B.
opportunity
C.
extinction
【单选题】After they explained how he escaped, it seemed very obvious.
A.
small
B.
apparent
C.
hidden
【单选题】His methods of escape have been virtually impossible to figure out for decades.
A.
almost
B.
scarcely
C.
nearly
【单选题】The two coins under the cups did not resemble one another but we were still fooled.
A.
react to
B.
look like
C.
differ from
【单选题】As children mature, they learn how to use deception to get things they want.
A.
get more childlike
B.
begin to talk
C.
grow older
【单选题】Species that adapt to new environments well can live in many different places.
A.
accept willingly
B.
believe in
C.
fight against
【单选题】Houdini grew up in Budapest, Hungary, _____.
A.
a city in Western Europe.
B.
a city in Eastern Europe.
C.
a region in northern Russia
【多选题】conditions that change ptarmigan camouflage summer outfit Caribbean flounder
A.
a bird about the size of a pigeon that lives in Europe and North America.
B.
a fish whose flat body is the color of the ocean floor.
C.
speckled grey and brown feathers.
D.
availability of food and water, temperatures, the presence of predators both animal and human.
E.
a disguise that helps the ptarmigan hide from predators by matching the color of its environment.
【单选题】Children often learn by mimicking the behavior of their parents and older siblings.
A.
imitating
B.
creating
C.
watching