What does the passage mainly discuss?
A.The Spanish influence in Colorado.
B.The history of the Anasazi in Colorado.
C.Early exploration of Colorado.
D.Economic exploitation of Colorado.

Never/history/humanity/there/be/more people/live/world.
A.Never in the history of humanity there are more people living in this world.
B.Never in the history of humanity has there been more people to live in this world.
C.Never in the history of humanity are there more people living in this world.
D.Never in the history of humanity have there been more people living in this world

plants/animals/survive/ oxygen.
A.Neither plants nor animals can survive having oxygen.
B.Neither plants or animals can survive without oxygen.
C.Neither plants nor animals can survive without oxygen.
D.Not plants nor animals can survive with no oxygen.

Tennis wear has become a very lucrative business for both manufacturers and tennis stars.
A.illegal
B.expansive
C.circumstantial
D.profitable

The pilot miraculously survived the crash unscathed.
A.unsurprised
B.unhurt
C.unhappy
D.undeterred

The word "retrieved" in paragraph 4 is closest in meaning to__________.
A.bought
B.interrupted
C.recovered
D.forgotten

It can be inferred that short-term memory is called "working" memory because________.
A.we use it extensively when we are working.
B.it holds information we are working on at a given moment.
C.it is very difficult to use effectively.
D.we must work hard to retrieve information from it.

According to the passage, which type of information is sent to short-term memory?
A.Information we need for three seconds or less.
B.Information that is relevant to us.
C.Information that surprises us.
D.Environmental stimuli we do not perceive.

According to the passage, typists are unable to recall information they type if__________.
A.they are tired.
B.they are distracted by something or someone.
C.they have too much work to be able to process it all.
D.they do not recognize it as meaningful enough to remember.

The word "They" in paragraph 1 refers to__________.
A.psychologists
B.information
C.memory structures
D.environmental stimuli