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问题 填空题

密度计是用来测量液体密度的仪器，测量时漂浮在被测液体中，如图，用同一支密度计分别测量甲、乙两种液体的密度，两种液体的密度p甲_____p乙．（均选填“>”“＝”或“<”）

   

答案

<

因密度计在两种液体中都处于漂浮状态，故由物体的浮沉条件可知：密度计在两种液体中所受浮力均等于重力，即F甲=F乙，因密度计在甲液体中浸入液体的体积大于在乙液体中时浸入体积，则由浮力公式F=ρgV可得，ρ甲＜ρ乙．

故答案为：＜．

听力题

阅读下面短文，掌握其大意，然后根据短文内容和首字母提示，在短文空白处填入适当的单词，使短文内容通顺、合理。并将完整的单词填写在答题卡的相应位置上。

Tuesday, 4th May

Hurray! I’ve just met my all-time hero — Wong Kam-Po. I’ve seen him many t  小题1:    on television, but it was fantastic to meet him in person because c  小题2:   is my favourite sport. I’d love to be a professional cyclist (自行车手) one day.

I arrived at Shangri-La Hotel on Sunday to meet my family for lunch, when I found out that Wong Kam-po was giving a talk there. I decided to l  小题3:   to the talk instead. Wong talked about w  小题4:    the gold medal at the 2006 Asian Games. He said he felt very p  小题5:     of himself and his teammates. He explained how he and his team prepared themselves for races.

After the talk, I went up to him and introduced m  小题6:   . I asked him f  小题7:   some advice to improve my riding skills. I was a bit nervous s 小题8:    I couldn’t express myself very well. Wong said that we needed to believe in ourselves and should never give u  小题9:   .

It was a fantastic e 小题10:     and I really enjoyed talking to my hero!
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单项选择题

下列项对颅内压影响最小（）

A.门静脉压

B.脑脊液生成率

C.颅内顺应性

D.脑脊液吸收阻力

E.静脉窦压力
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