单项选择题

A．The woman should work harder to improve her grades.
B．The woman will benefit from the effort she’’s put in.
C．It serves the woman right to get a poor grade.
D．It was unfair of the teacher to give the woman a C.
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单项选择题
According to the passage, DNA fingerprinting can be unreliable when ______.
A．the methods used of blood-cell calculation are not accurate
B．two different individuals of the same ethnic group may have the same DNA fingerprinting pattern
C．a match is by chance left with fingerprints that happen to belong to two different individuals
D．two different individuals leave two DNA samples
单项选择题
A．An essay examination.B．An objective examination.C．An open-book examination.D．A take-home examination.
A．An essay examination.
B．An objective examination.
C．An open-book examination.
D．A take-home examination.
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