题目内容：
Questions are based on the following passage． It’s the first question parents ask when their child is diagnosed with autism(自闭症)．Will his future brothers or sisters have a higher risk of 36 it，too?
According to the largest study of siblings(兄弟姐妹)in families with autism，the answer is yes．Among 664 children who had at least one older sibling with the developmental disorder，the 37 risk of autism was nearly 19％ 38 higher than previous sibling-recurrence estimates"that were anywhere from 3％ to 10％．Kids with more than one older autistic sibling had an even higher risk of the disorder:32％．
The 39 suggest that genes play a key role in autism risk．But they also hint that other environmental factors 40 by siblings，like influences in the womb(子宫)，may be important as well．
On the 41 of the findings，the researchers recommend that doctors closely 42 younger siblings of autistic children to pick up any early signs of the disorder, 43 an unusually large head or delayed language development and communication skills．Evidence suggests that early 44 and diagnos is of autism can help children take advantage of the rapies that can treat some of its 45 ．
A．average
B．basis
C．common
D．consequently
E．detection
F．developing
G．distributed
H．dramatically
I．including
J．monitor
K．reason
L．results
M．shared
N．symbols
O．symptoms
第(36)题应填__________
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