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问题 填空题

在探究固体分子间是否有间隙的实验中，将机油装入一个壁很厚、相当坚固的钢筒中，然后加上2万个标准大气压，结果发现钢筒“流泪”了，也就说机油从钢筒里渗透出来，说明 _________ ．

答案

固体分子存在间隙．

填空题

根据首字母提示写单词完成下面的短文

     Hello, I am Peter. These are my two (1)b_____ friends in my class. One is Lucy and the (2)o_____ is Jenny. Lucy

is a good singer (歌手), and she takes part in (参加) some (3)a_____ in the music club. When I am tired, she usually

(4)s_____ lovely songs (歌曲) to make me relaxed. Jenny loves to (5)w_____ poems (诗). We can (6)r_____ some

of her poems in our school magazines. Lucy and Jenny often tell interesting (7)s_____. They (8)b_____ us a lot of

fun. They are also (9)p_____ clever and do well in the tests. All of the boys and girls in my class like them very much.

(10)E_____ thinks they are nice girls.

1. _____ 2. _____ 3. _____ 4. _____ 5. _____

6. _____ 7. _____ 8. _____ 9. _____ 10. _____
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选择题
若点P（x，y）的坐标满足于x+y=xy，则称P点是“和谐点”，下面各点，符合这个要求的是（　　）
A．（1，1）B．（-2，2）C．(-
1
2
，-
1
2
)		D．（2，2）
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