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]
Identify the exchanges that a closed sys ,c;nipldem80 q0k up4tem makes withim3-lza1. be t:bo)ox t, u2a/ugfj to.iof87 the environment.
I. Energy
II. Matter
A. I only
B. I only
C. Both I and II
D. Neither I nor II
参考答案: A
本题详细解析:
A closed system exchanges only energy and not matter across its bound su.navl4rk 0o 9ua45maries. This is rare. The earth could be an example. Solar energy enters the earth’s atmosphere. Some is reflected back to svon4lkr.4ma 5as u0u 9pace as is some heat that is reradiated from the earth. Matter is exchanged in extremely small quantities, for example an occasional meteor entering and satellites leaving.
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