In a recent study 5 over 400 health adults, researchers from Carnegie Mellon University in Pennsylvania examined the effects of perceived social support and the receipt of hugs 6 the participants' susceptibility to developing the common cold after being 7 to the virus .People who perceived greater social support were less likely to come 8 with a cold ,and the researchers 9 that the stress-reducing effects of hugging 10 about 32 percent of that beneficial effect.
5、A.collecting B.involving C.guiding D.affecting
6、A.of B.in C.at D.on
7、A.devoted B.exposed C.lost D.attracted
8、A.across B.along C.down D.out
9、A.calculated B.denied C.doubted D.imagined
10、A.served B.required C.restored D.explained
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