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根据短文内容,从下框的A-F选项中选出能概括每一段主题的最佳选项。选项中有一多余选项。 A. Observe the World around Us B. Keep a Science Journal C. Discuss to Learn Science D. Learning Science in School is not Enough E. Introduce Kitchen Science F. Ways to Explore Science 1_____ Science is an amazing subject, but it's difficult to capture the true magic of science and contain it in a book. For young learners, textbook science often looks like a lot of big, confusing terms that have to be memorized. That is why sometimes children think that science is dry, boring and difficult. Textbooks can't help them discover how exciting science really is. So find some other ways to help kids to develop a love of science. 2_____ Instead of just reading from a book about the water cycle, air pressure, chemical changes, sound waves, fingerprints, etc., let students experience these things instead. It's much more memorable for them to discover a principle or fact about science on their own than it is to simply be told about it. There are great resources online that include complete lesson plans for hundreds of activities. Afterwards, a brief discussion can bring the principal points home to children. In addition, an explanation of any unfamiliar terms at this point will make a lot more sense. 3_____ Science is all around. Taking time to look at the world and to discuss what is seen, encourages scientific observation and a love of learning. Look at changing seasons, weather events, plants, pets, insects, the stars and virtually everything else as an opportunity to help students learn more about science. 4_____ Real scientists record their findings. Encourage young scientists to draw pictures and write about what they see and do. Science isn't an isolated subject. It involves reasoning, writing, math, history, art, and more. A journal gives students a place to record the things about science that interest them most. 5_____ Cooking is filled with chemical reactions. Teach students about what happens when carbon dioxide bubbles form in dough. Help them to understand mixtures by making a salad, solvents by mixing up powdered drink mixes, colloids by making gelatin, evaporation and cloud formation by observing a boiling tea kettle. Crystals can be observed (and grown) with salt and sugar. Liquids can be changed to solids in a freezer. The list is almost endless.
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【简答题】血 - 胸腺屏障包括哪 5 个组成部分?其功能是什么?
【判断题】会计分录的形式不管是一贷多借、一借多贷,还是多借多贷,借、贷方的金额肯定是相等的。( )
A.
正确
B.
错误
【简答题】输出倒三角星号,如图所示 ************* *********** ********* ******* ***** *** *
【单选题】M10LH 5g6g-S中的LH表示()
A.
左旋
B.
右旋
C.
长度
D.
螺距
【单选题】长期过量摄入水溶性维生素时
A.
不以原型从尿中排出
B.
在体内贮存备用
C.
经代谢分解后排出体外
D.
致体内贮存过多引起中毒
E.
干扰其他营养素代谢
【单选题】长期过量摄入水溶性维生素时
A.
不以原形从尿中排出
B.
在体内贮存备用
C.
致体内贮存过多引起中毒
D.
干扰其它营养素代谢
【单选题】根据鳞状上皮细胞发育规律,核浆比最大的是
A.
内底层细胞
B.
角化前细胞
C.
外底层细胞
D.
中层细胞
E.
角化细胞
【简答题】请阅读文章第一自然段,总结出麦当劳从美国来到中国以后的速度、价格、接收群体、功能定位四个方面的变化
【单选题】调频灯的设计中,频率与哪个参数有关
A.
最大计数值
B.
比较值
C.
以上两个
【单选题】关于脂溶性维生素叙述错误的是:
A.
溶于脂肪和脂溶剂
B.
不溶于水
C.
在肠道中与脂肪共同吸收
D.
长期摄入量过多可引起相应的中毒症
E.
可随尿排出体外
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