OG4 阅读 Q51

Choice B is the best answer. The passage says that the Little Ice Age began "about 750 years ago" (line 1, "About...erupted") and that "the cold summers and ice growth began abruptly between 1275 and 1300 C.E." (lines 23-24, "determine... 1300 C.E"). The figure indicates that average temperatures in central England began to drop around 1275 CE, and this drop in temperatures continued "through the 1700s" (line 32, "may... 1700s").
Choices A, C, and D are incorrect because the passage and figure do not indicate that the Little Ice Again began around 1150 CE, just before 1500 CE, or around 1650 CE.