一实验小组为进行某项探究实验活动，课前给实验室老师送去了一份_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题实验题

一实验小组为进行某项探究实验活动，课前给实验室老师送去了一份器材清单，老师根据清单为他们准备的器材如图所示．

用图中的器材可探究的主题有：

A．液体内部压强大小与液体深度的关系；（填写器材序号）　　_．

B．液体内部压强大小与液体密度的关系；（填写器材序号）　　．

C．浮力大小与液体深度的关系；（填写器材序号）　　．

答案

1，2，3，7，4（或5，或6）

题目分析：用图中的器材可探究的主题有：A，液体内部压强大小和液体深度的关系；

需要的器材是：（5）一杯水、（9）液体压强计和（1）一把塑料刻度尺就行；

故答案为：1，5（或4或6），9．

选探究主题B，探究实验器材选（1）一把塑料刻度尺、（4）酒精和（5）水（或4和6或5和6），（9）液体压强计；

故答案为：1，4和5（或4和6或5和6），9．

选探究主题C，探究实验器材选（1）一把塑料刻度尺、（2）细线、（3）金属块、（4）酒精、（7）弹簧秤

点评：此题考查我们根据器材设计实验的能力，综合性强，灵活性高，要求学生知识面广．这也是中考时经常考到的

默写题

古诗文默写。

小题1:落红不是无情物，。（龚自珍《己亥杂诗》）

小题2: ，自缘身在最高层。（王安石《登飞来峰》）

小题3:了却君王天下事，。（辛弃疾《破阵子·为陈同甫赋壮词以寄之》）

小题4: ，月有阴晴圆缺，此事古难全。（苏轼《水调歌头·明月几时有》）

小题5:莲是高洁的象征，周敦颐在《爱莲说》中以“ ，”来表现自己洁身自好的品质。

小题6:今年4月，国家出台了国策十条，要努力改善百姓居住条件。杜甫的《茅屋为秋风所破歌》中“ ，”两句就体现了这种美好的愿望。

小题7:“我是大海的叹息，是天空的泪水，是田野的微笑。”雨浸润了古今中外文人墨客的心，请你写出连续两句与“雨”有关的诗句：，。

问答题

Exercise, everyone advises! But immediately, when you try, you run into trouble. (46)There is so much contradictory, sometimes incorrect advice about exercising that you become confused. Test yourself on the following true false quiz. It will tell you what you need to know.
1. The best way to reduce the mid-section is to do abdominal exercise.
False. Many people believe that when specific muscles are exercised, the fatty tissues in the immediate area are "burned up." (47)The truth-is that exercise burns fat from all over the body and not from one specific area, regardless of the type of exercise. Of course, if you reduce the fat throughout your body, you will certainly see results around your waistline too!
2. To maintain an adequate level of physical fitness, you need to exercise only twice a week.
False. Studies conducted by NASA, the National Aeronautics and Space Administration, show that unexercised muscles lose their strength very quickly. After 48 to 72 hours, you must use the muscles again to reestablish the good physical effect. And what does that mean to you (48) NASA scientists concluded that while daily exercise is most beneficial, three alternating days each week will maintain an adequate level of physical fitness.
3. To lose weight you should always "work up a good sweat" when exercising.
False. Sweating only lowers body temperature to prevent overheating; it does not help you reduce weight. You may weigh less immediately after a workout, but this is due to water loss. Once you replace the liquid, you replace the weight.
4. If your breathing doesn’t return to normal within minutes after you finish exercising, you’ve exercised too much.
True. Five minutes or so after exercising, your breathing should be normal, your heart shouldn’t be pounding, and you shouldn’t be exhausted. (49) Beneficial exercise is not overly difficult, unpleasant, and exhausting; it is moderate, enjoyable, and refreshing.
5. Walking is one of the best exercises.
True. Walking helps circulation of blood throughout the body, and thus has a direct effect or your overall feeling of health.
6. The minimum amount of time you should spend exercising in a day is 20 minutes.
True. There are more than 400 muscles that attach to your skeleton. (50) A good exercise routine should contract and stretch all these muscles, and this simply cannot be done with four or five exercises in five to ten minutes. From experience, I’ve found that about 20 minutes is the minimum amount of time needed for an adequate workout.