GMAT 2016版OG Critical Reasoning新题.pdfVIP

1. Neuroscientist: Memory evolved to help animals react appropriately to situations they encounter by drawing on the past experience of similar situations. But this does not require that animals perfectly recall every detail of all their experience. Instead, to function well, memory should generalize from past experiences that are similar to the current one. The neuroscientist’s statements, if true, most strongly support which of the following conclusions? (A) At least some animals perfectly recall every detail of at least some past experiences. (B) Perfectly recalling every detail of all their past experiences could help at least some animals react more appropriately than they otherwise would to new situations they encounter. (C) Generalizing from past experiences requires clear memories of most if not all the details of those experiences. (D) Recalling every detail of all past experiences would be incompatible with any ability to generalize from those experiences. (E) Animals can often react more appropriately than they otherwise would to situations they encounter if they draw on generalizations from past experiences of similar situations. 2. Astronomer: Most stars are born in groups of thousands, each star in a group forming from the same parent cloud of gas. Each cloud has a unique, homogeneous chemical composition. Therefore, whenever two stars have the same chemical composition as each other, they must have originated from the same cloud of gas. Which of the following, if true, would most strengthen the astronomer’s argument? (A) In some group of stars, not every star originated from the same parent cloud of gas. (B) Cloud of gas of similar or id