问题
选择题
如图所示，某同学在探究液体压强特点的过程中，先将微小压强计的金属盒放在容器中某一深度位置固定住，再向容器中注满水，U形管两边液面就会有一高度差，在下面提供的四个选项方案中，哪个能使U形管两边液面高度差增大：
A.把容器中的水取走少许，使液面下降
B.把水全部换成煤油并注满容器
C.在水中撒食盐且水不溢出
D.把水全部换成酒精并注满容器
答案
答案：C
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如图所示，某同学在探究液体压强特点的过程中，先将微小压强计的金属盒放在容器中某一深度位置固定住，再向容器中注满水，U形管两边液面就会有一高度差，在下面提供的四个选项方案中，哪个能使U形管两边液面高度差增大：
A.把容器中的水取走少许，使液面下降
B.把水全部换成煤油并注满容器
C.在水中撒食盐且水不溢出
D.把水全部换成酒精并注满容器
答案：C
Hi, boys and girls! I’m Kathy.Let me _小题1:__you something about my family.There 小题2: three people in my family------my father, my mother, and I.My father is a 小题3: .And he works in a bank.He thinks his job is 小题4: boring.He wants 小题5: a policeman.He enjoys __小题6:__ TV after dinner.My mother is a teacher.She 小题7: in a middle school.She thinks her job is very 小题8:.She likes her students very much.She works hard and often comes back home late.Look, many students are on the playground.Some are walking, __小题9:_are playing games..In her free time(空闲时间), she likes writing stories 小题10: a magazine.I study at a middle school.I also want to be a teacher when I grow up.
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