约750字。

　　【图解教材】之文档：人教必修5 Unit 1 Great scientists
　　【思维导图】
　　【微试题】
　　1. ______ ______， wish all of you good health and a long life.最后祝大家健康长寿。
　　【答案】To conclude
　　2. He didn‘t __________________ yesterday.他昨天没有参加会议。
　　【答案】attend the meeting
　　3. It’s very  dangerous to _______________ these viruses without any protection.
　　不加任何保护，直接暴露在这些病毒下是非常危险的。。
　　【答案】be exposed
　　4.阅读理解。
　　They baby is just one day old and has not  yet left hospital. She is quiet but alert （警觉）. Twenty centimeters from her face researchers have placed a white card with two black  spots on it. She stares a t it carefully. A researcher removes the card and replaces it by another, this time with the spots differently spaced. As the  cards change from one to the other, her gaze（凝视） starts to lose its focus — until a third, with three black spots, is presented. Her gaze returns: she looks at it for twice as long as she did at the previous card. Can she tell that the number two is different from three, just 24 hours after coming into the w orld?
　　Or do newborns simply prefer more to fewer? The same experiment, but with three spots shown before two, shows the same return of interest when the number of spots changes. Perhaps it is just the newness? When slightly older babies were shown cards with pictures of objects (a comb, a key, an orange and so on), changing the number of objects had an effect separate from changing the objects themselves. Could it be the pattern that two things make, as opposed to three? No again. Babies paid more attention to squ ares moving randomly on a screen when their number changed from two to three, or three to two. The effect eve n crosses between senses. Babies who were repeatedly shown two spots became more excited when they then heard three drumbeats than when they heard just two; likewise （同样地） when the researchers started with drumbeats and moved to spots.
　　1. The experiment described in Paragraph 1 is related to  the baby’s__.
　　A. sense of hearing B. sens