本题目来源于试卷: IB ESS Unit 1 Foundations of ESS，类别为 IB环境系统与社会
[单选题]
A model is a simplified ve, mmp3 93rqf /sh8ypfxrsioa )bnkj/1hr( *lp2jde n of reality used to help people understand complenela1r* jbd )p2h(j/k x workings.
Identify which items on the following list could best be described as models.
I. The human body
II. An office building
III. The atom
IV. The solar system
A. I and II
B. III and IV
C. II and IV
D. All are models.
参考答案: B
本题详细解析:
The model of the atom is used to explain the smt f+c;+rpqcg2 allest piece of matter since we cannot actually see them but only detect their properties. The model of the solar system is used to explain the Earth’s surroundings in space. Again, +c+ ;rpcg2q tfthis is in part because we cannot see the solar system but only detect parts of it.
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