根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Find a quiet location. Keep a routine. Focus on one subject at a time. It all seems like sound advice for students who need to hit the books, . Here's a list of tips from Carey, a scientist, for getting the most out of your study time.
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Doing practice quizzes can help you retrieve（检索）information on test day. “Tests have a very bad reputation as a measurement tool,” Carey says. But psychologists have found self-tests slow down the forgetting of material you've studied. “If you study something once, and then you test yourself on it,” Carey says, “you do better than if you study it twice over.”
Move around
. “If you move around and study the same material in several places,” he says, “you may be forming multiple associations for the same material. So it's better anchored in your brain, and you can pull it out easier.”
Mix it up
Think about a football who does strength training, speed training and drills. Carey says alternating between different facets facts of a subject in a single sitting can “leave a deeper impression on the brain”. For example, when studying French, do some verbs, some speaking and some reading. .
Space it out
Information learned in a hurry is lost just as fast. So if you really want to learn, space out shorter, hour-long study sessions. “There's no doubt that you can cram for（突击备考）an exam.” Carey says, “ . And once it's gone, “it's gone. You're not getting it back.”
A. Test yourself
B. Study it and practice more
C. and it turns out that some of them are in great help
D. but recent studies indicate the conventional wisdom is wrong
E. The problem is that it's so easy to forget what you just crammed
F. Changing up where you study can help you keep more information
G. Spending your time in deep concentration on just verbs isn't effective