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иxr(sh)g䣺
һƪ20犵xs7001214};فƪһģ40֧15minǰһƪʣoһƪ(du)xеbackIreviewIѲ(hu)}ȷһQ磺11}^12}֮l(f)F(xin)˴c(din)backIص11ȫc(din)review͕(hu)F(xin)һ(g)棬}Ŀбc(din)11}Ȼgo to this question ԇҲ@ӵăƪ^xԇʱ С (jng)ԇ3ƪ
и r(sh)g䣺
һɽMһMһ(g)talk(P(gun)У@)ɂ(g)lecture(P(gun)ĿƌW(xu)ȻƌW(xu)VҊ)34}}r(sh)g(ȥĕr(sh)g)10min ԇtڼһM(jng)ԇƪ
иZr(sh)g䣺
6}ǰɵ(zhn)15sش45s34}(zhn)30sش60s56}(zhn)20sش60s
иԇr(sh)gԭtģиr(sh)g
С(Cό)20min150225words;((d))30min30words
Ͼиԇr(sh)gκЃ(ni)ͬW(xu)?c)ƽr(sh)(zhn)r(sh)MģM(chng)r(sh)g@Ͽ(chng)r(sh)Ų(hu)Ły!
xиԇr(sh)L(zhng)
и֞IJÿ(xing)ռ30֝M120
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2.Z֣6(xing)(2(xing)ض(jin)Ε(hu)Ԓ}(d)_(d)Լ^c(din);4(xing)Y(ji)x _(d)Լ^c(din))30(zhn)r(sh)g1犳m(x);r(sh)g20
3.֣2(xing)(1(j)ض^c(din)(d)չ_Փ1(xing)Y(ji)xչ_Փ)r(sh)g50((d)Փ30;Y(ji)x 20
4.x֣3——5ƪW(xu)g(sh)ÿƪ700ңÿƪ12-14(g)}r(sh)g60-100ҲҪ34(g)Сr(sh)І}