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People are so busy these days that many have no time to cook. This is a problem, because many families love home cooking! A family meal brings everyone together. In some families, meals are often the only time everyone sees one another at the same time. Another reason people enjoy home cooking is that it is often a way of showing love. A parent who makes some cookies is not just satisfying a child's sweet tooth. She or he is sending a message. The message says,“I care about you enough to spend an hour making cookies that you will eat up in no time.” There is also something about the smell of home cooking. The smell of home cooking pleases people of all ages. It makes most of us feel good and loved—even if we are the ones doing the cooking! Next time you smell a cake being cooked, stop for a moment and pay attention to your mood. 1. Fewer people cook now because _________. A. they have no time.               B. they are not busy. C. many people don't like cooking.    D. they don't like family meals. 2. A parent spends an hour making cookies __________. A. just to satisfy her or his child's sweet tooth    B. only to send a message. C. so her child can eat them in 15 minutes      D. to show her or his love 3. The writer thinks the smell of home cooking makes us _________. A. feel happy                 B. interested in cooking C. pay attention to our mood     D. love others 4. What's the main idea of this passage? A. Family meals are important.     B. How to make cookies. C. People are too busy to cook.     D. Home made cookies taste better。
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举一反三
【单选题】高等学校体育的基本组织形式有 ()、课余体育活动。
A.
体育训练
B.
体育竞赛
C.
体育课程
D.
体育人文
【判断题】用理想变压器给负载电阻R供电,变压器输入电压不变时,欲使变压器输入功率增加,应该增加负载电阻值,而原副线圈的匝数保持不变。
A.
正确
B.
错误
【单选题】用理想变压器给负载电阻供电,变压器输入电压不变时,要使变压器的输入功率增加,则应该( )
A.
增加变压器原线圈匝数,而副线圈匝数和负载电阻R保持不变
B.
增加变压器副线圈匝数,而原线圈匝数和负载电阻R保持不变
C.
减少变压器副线圈的匝数,而线圈匝数和负载电阻R保持不变
D.
增加负载电阻R的阻值,而原副线圈的匝数保持不变
【单选题】用理想变压器给负载电阻R供电,变压器输入电压不变时,要想使变压器的输入功率增加,应该:
A.
增加变压器二次绕组的匝数,而一次绕组的匝数和负载电压R保持不变
B.
增加变压器一次绕组的匝数,而二次绕组的匝数和负载电压R保持不变
C.
减少变压器一次绕组的匝数,而二次绕组的匝数和负载电压R保持不变
D.
增加负载电阻的阻值,而一次、二次绕组的匝数保持不变
【单选题】用理剂变压器给负载电阻R供电,变压器输入电压不变时,要想使变压器的输入功率增加,则应该( )
A.
增加变压器一次组的师数,二次紫组的匝数和负截电阻R保持不变
B.
增加变压器二次绕组的匝数,而一次绕组的匝数和负载电阻R保持不变
C.
减少变压器二次绕组的匝数,而一次绕组的匝数和负载电阻R保持不变
D.
增加负载电阻R供电,而一次绕组、二次组的的匝数保持不变
【单选题】高等学校体育的基本组织形式有 、课余体育活动。
A.
体育训练
B.
体育竞赛
C.
体育课程
【简答题】高等学校体育的基本组织形式有 、课余体育活动。
【单选题】用理想变压器给负载电阻R供电,变压器输入电压不变时,要想使变压器输入功率增加则应该()。
A.
增加变压器一次绕组匝数,而二次绕组匝数和负载电阻R保持不变
B.
增加变压器二次绕组匝数,而一次绕组匝数和负载电阻R保持不变
C.
减小变压器二次绕组的匝数,而一次绕组的匝数和负载电阻R保持不变
D.
增加负载电阻R的阻值,而一次、二次绕组的匝数保持不变
【判断题】用理想变压器给负载电阻R供电,变压器输入电压不变时,欲使变压器输入功率增加,应该增加负载电阻值,而原副线圈的匝数保持不变。
A.
正确
B.
错误
【简答题】高等学校体育的基本组织形式有______、课余体育活动。 A、体育训练 B、体育竞赛 C、体育课程
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