Teachers should take steps to prevent students from cheating on exams. To begin with, teachers should stop reusing old tests. Even a test that has been used once is soon known on the student grapevine. Students will check with their friends to find out, for example, what was on Dr. Smith’s biology final last term. They may even manage to turn up a copy of the test itself, accidentally not turned in by a former student of Dr. Smith’s. Teachers should also take some commonsense precautions at test time. They should make students separate themselves--by at least one seat--during an exam, and they should watch the class closely. The best place for the teacher to sit is in the rear of the room, so that a student is never sure if the teacher is looking at him or her. Last of all, teachers must make it clear to students that there will be stiff penalties for cheating. Anyone caught chea
Students should be jealous. Not only do babies get to doze their days away, but they’ve also mastered the fine art of learning in their sleep.
By the time babies are one year old, they can recognize a lot of sounds and even simple words. Marie Cheour at the University of Turku in Finland suspected that they might progress this fast because they learn language while they sleep as well as when they are awake.
To test the theory, Cheour and their colleagues studied 45 newborn babies in the first days of their lives. They exposed all the infants to an hour of Finnish vowel sounds one that sounds like "oo"; another like "ee" and the third boundary vowel peculiar to Finnish and similar languages that sounds like something in between. EEG (脑电图) recording of the infants brains before and after the session showed that the newborns could not distinguish the sounds.
Fiftee
A. Right
B. Wrong
C. Not mentioned
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