TPO10阅读求助啊！！！

蝶飞依依UID: 2905269

Paragraph 3：Over long periods of time, substances whose physical and chemical properties change with the ambient climate at the time can be deposited in a systematic way to provide a continuous record of
changes in those properties overtime, sometimes for hundreds or thousands of years. Generally, the layering occurs on an annual basis, hence the observed changes in the records can be dated. Information on temperature, rainfall, and other aspects of the climate that can be inferred from the systematic changes in properties is usually referred to as proxy data. Proxy temperature records have been reconstructed from ice core drilled out of the central Greenland ice cap, calcite shells embedded in layered lake sediments in Western Europe, ocean floor sediment cores from the tropical Atlantic Ocean, ice cores from Peruvian glaciers, and ice cores from eastern Antarctica. While these records provide broadly consistent indications that temperature variations can occur on a global scale, there are nonetheless some intriguing differences, which suggest that the pattern of temperature variations in regional climates can also differ significantly from each other.

4. According to paragraph 3, scientists are able to reconstruct proxy temperature records by
○ studying regional differences in temperature variations
○ studying and dating changes in the properties of substances
○ observing changes in present day climate conditions
○ inferring past climate shifts from observations of current climatic changes

答案是B 能不能帮忙分析一下出题点。。。

坠坠芙蓉影UID: 2815408

定位句是Information on temperature, rainfall, and other aspects of the climate that can be inferred from the systematic changes in properties is usually referred to as proxy data.感觉如果定位后面那句长句的话跟答案对不上