黃金閱讀Variations in the climate - 英檢

Paragraph 6：One way to estimate how all the various processes leading to
climate variability will combine is by using computer models of the global
climate. They can do only so much to represent the full complexity of the
global climate and hence may give only limited information about natural
variability. Studies suggest that to date the variability in computer
simulations is considerably smaller than in data obtained from the proxy
records.

9. According to paragraph 6, which of the following is true of computer
models of the global climate?
○ The information they produce is still limited.
○ They are currently most useful in understanding past climatic behaviors.
○ They allow researchers to interpret the data obtained from proxy records.
○ They do not provide information about regional climates

答案是A，原文為"They can ... and hence may give only limited information
about natural variability"

我的問題是D，如文中所說"They can do only so much to represent the full
complexity of the global climate" 電腦模擬只能提供全球氣候資訊
這樣D為何不能選呢??

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