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Questions 9 to 12 are based on the passage you have just heard.
9
A.They cannot walk normally.
B.They always keep crying loudly.
C.They do the same things repeatedly.
D.They are indifferent about everything.
10
A.The diagnostic instrument is not advanced enough.
B.The signs of possible autism are not easy to detect.
C.The health exam is not professional.
D.Doctors pay little attention to the health exam.
11
A.Take their children out as much as possible.
B.Talk and play with their children.
C.Correct their children's mistakes in time.
D.Encourage them to play with other kids.
12
A.Autism is more common in girls than boys.
B.The exact cause of autism is not clearly known.
C.Doctors are not able to diagnose autism.
D.Autism will descend from generation to generation.
