问题
选择题
Tom will call me as soon as he______ Shanghai. [ ]
A．arrives
B．will reach
C．arrives in
D．get to
答案
答案：C
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Tom will call me as soon as he______ Shanghai. [ ]
A．arrives
B．will reach
C．arrives in
D．get to
答案：C
生成2个α粒子，己知质子质量mp=1.0078u，α粒子的质量mα=4.0026u，锂核质量mLi=7.0160u，质子的初动能是E1=0.6MeV，则（ ）