请阅读下面短文，掌握其大意，然后从36—55各题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项。

请阅读下面短文，掌握其大意，然后从36—55各题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
Peer pressure can be a powerful force, and sometimes a positive one. For example, hanging out with active peers may lead kids to         more, making a child’s social network a vehicle for promoting healthy habits and         obesity unconsciously.
The scientists studied networks of a group of students aged 5 to 12 and        how the youngsters’ made and dropped friends, and         effect these changing relationships had on their physical activity level.
In fact, children         their exercise level little by little to better       those in their circle; children who      with more active students were more        to increase their physical activity levels,         those who befriended more sedentary(久坐不动的) children became         active. The children were mirroring, following or adjusting to be         to their friends before they knew it.
The encouraging         suggest a potentially effective way to change children’s behavior.         relying only on organized exercise programs to get moving, perhaps introducing sedentary kids to more active ones — might help more kids         the couch.
It’s believed that this is a possible novel approach to obesity        . The social environment does carry more power than we have given it         for, so we should make use of that intentionally to influence kids.
      that children are increasingly connected to one another,         through face-to-face interactions or virtual ones, their         networks can clearly have a deep effect        many aspects of their behavior-help kids in the long run by turning them into healthier adults.

小题1:	A．sleep B．move C．exercise D．eat

小题2:	A．developing B．increasing C．introducing D．reducing

小题3:	A．tracked B．informed C．sorted D．concluded

小题4:	A．whose B．what C．that D．which

小题5:	A．adjusted B．insisted C．appealed D．devoted

小题6:	A．equal B．compete C．match D．compare

小题7:	A．left out B．hung out C．made out D．figured out

小题8:	A．likely B．possible C．bound D．due

小题9:	A．while B．though C．since D．because

小题10:

A．more B．permanent C．less D．temporary

小题11:

A．familiar B．similar C．popular D．regular

小题12:

A．causes B．results C．reasons D．experiments

小题13:

A．More than B．Less than C．Other than D．Rather than

小题1:C

小题2:D

小题3:A

小题4:B

小题5:A

小题6:C

小题7:B

小题8:A

小题9:A

小题10:C

小题11:B

小题12:B

小题13:D

小题14:B

小题15:A

小题16:D

小题17:B

小题18:D

小题19:A

小题20:D