иԇ(TOEFL)LJHӰʹVĵӢZ(y)ˮƽyԇ֮һиW(xu)УW(xu)Ę˜ʻԇՈC^(gu)Ҳ(hu )Ҫиɿ(j)ęC(hu )Բٿ(hu )xиnԼķ֔ȥ(sh)FԼˎҸõ˽͜ʂиС(zh)ؽBиx߫@x30֝M(mn)ֵĽ(jng)俼Ľhͼ

иx}
иԇM(mn)֞120xֺ3(g)( (tng)Z(y)(xi))һӶǷքe֞30xһr3ƪ60犵Ĵ}r(sh)gxԇжһƪxr(sh)gҲ(hu )L(chng)µL(chng)ȴ700ÿһƪ(hu )12-14}Ŀx}Ŀǿ^(gun)}xһĆx}ҲһЩx}ʽԇ֮džx}(hu )_ʾ
xȡ
иȡڲͬW(xu)ƵĴW(xu)̶ȳAW(xu)g(sh)Է֞ˇg(sh)(hu )ƌW(xu)ȻƌW(xu)@(li)mȻиµ}߶ȶԪǿҪԼȱ漰W(xu)Ƶı֪RиԇyԇZ(y)Ե\úһ(g)W(xu)ƌ(zhun)I(y)ԇеĴ𰸶ҵ
(zhun)~
и漰W(xu)T(mn)(li)һЩõČ(zhun)~Ҳ(hu )ʮЎиԇ(hu )Ҫκ͚Y׃ˮ֪“Oxygen”“Hydrogen”(hu )pɵ漰P(gun)~ͬ“Nitrogen”“Carbon”֮(li)ijÌ(zhun)~W(xu)Ҳԓ“Cyanide”֮(li)^Ҋ(jin)~RҲÓڬF֪R߶Ȍ(zhun)I(y)o(w)Fo(w)MČ(zhun)~Dzܶյ@ҲETS(иkC)Ҫă
ڴҽoṩһ(g)Č(zhun)~ļڿԇĕr(sh)JRδҊ(jin)^(gu)Ć~“Cyanide”(hu )Α?ҿԲümY@(g)~ʲô˼Ҫס^mxֻҪӛסᵽһN“Cyanide”|(zh)Ϳӛס@(g)~FĴλ@(g)½B“Cyanide”Č;cעc(din)@(g)|(zh)Č;ע@(g)|(zh)ʲô(zh)xȥȻȥش}Ŀ@ӾͿԱ_(ki)ڲJR~(li)ϵK}ĿԺ҂Ҳ(hu )mBx俼
עNitrogenǵCarbon̼Cyanide軯
֮俼иxҪ~RҶྚ˼ڴ˻Aό(zhun)I(y)n_Ľ}˼·c}ɕ(hu )ګ@ijɿ(j)