单项选择题

A high negative ion count is likely to be found _______.

A．near a pond with a water pump
B．close to a slow-flowing river
C．high in some barren mountains
D．by a rotation water sprinkler
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单项选择题
According to the passage, which of the following statement is true
A．A change in the educational system will eliminate the need to cheat.
B．The problem of student cheating has its roots in deeper problems.
C．Students do not cheat on essay tests.
D．Punishment is an effective method of stopping cheating.
单项选择题
Educators are finding that students who cheat _________.
A．have poor academic records
B．use the information in late years .
C．can be academically weak or strong
D．are more likely to be punished than before
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