【单选题】 Many students agreed to come, but some students against because they said they don''t have time.
A.did not because they say they did not
B.were against because they say they don't
C.did not because they said they did not
D.were against coming because they said they don't
A.did not because they say they did not
B.were against because they say they don't
C.did not because they said they did not
D.were against coming because they said they don't
【单选题】 Which of the following statements about primary cooperation is supported by information in the passage
A.It was limited in prehistoric times.
B.It is usually the first stage of cooperation achieved by a group of individuals attempting to cooperate.
C.It is an ideal that can never be achieved.
D.It is most commonly seen among people who have not yet developed reading and writing skills.
A.It was limited in prehistoric times.
B.It is usually the first stage of cooperation achieved by a group of individuals attempting to cooperate.
C.It is an ideal that can never be achieved.
D.It is most commonly seen among people who have not yet developed reading and writing skills.
【单选题】 The underlined word "fragile" in the last paragraph is closest in meaning to ______.
A.inefficient
B.easily broken
C.poorly planned
D.involuntary
A.inefficient
B.easily broken
C.poorly planned
D.involuntary
【单选题】 A ball with a smooth surface made to roll on a very smooth surface would ______
A.remove its surface
B.meet some objects
C.roll a long distance
D.change its direction
A.remove its surface
B.meet some objects
C.roll a long distance
D.change its direction
【单选题】 Many of the electric and electronic products we purchase and consume today are what some industrial experts call "homogeneous toys".
A.identical
B.homosexual
C.unrelated
D.distinguishable
A.identical
B.homosexual
C.unrelated
D.distinguishable
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