单项选择题

Questions 32 to 35 are based on the passage you have just heard.

A．In the 17th century.
B．In the 1Sth century.
C．In the 18th century.
D．In the 16th century.
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单项选择题
What have Christopher Ross’ experimental results revealed to us
A．Those inheritable diseases may be cured through genetic testing.
B．Those inheritable diseases may be predicted through genetic testing,
C．Those inheritable diseases may be prevented through genetic testing.
D．Those inheritable diseases may be controlled through genetic testing.
单项选择题
A．They may be homesick and feel insecure.B．They may try to attract other people’s attention.C．They are either cold or sick.D．They want to protect themselves from physical injuries.
A．They may be homesick and feel insecure.
B．They may try to attract other people’s attention.
C．They are either cold or sick.
D．They want to protect themselves from physical injuries.
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