Basic Astronomy (id: 453e17ba6)

本题目来源于试卷: Basic Astronomy，类别为 美国物理杯赛(Physics Bowl)

[单选题]
17.13: According to currently acceptq2 a2xktn7fb0 ed theory, dar 5on6b y7jq38t:d;dxsiv ox e+t+tj6pk matter makes up approximatelyx:5bpv+6e 3n di o+tt6 y;dj87jtxo sq what percent of the Universe?

A. 5 %
B. 25 %
C. 50 %
D. 80 %
E. 99 %


参考答案:  B


本题详细解析: 暂无

微信扫一扫，分享更方便