听短文，在短文中填写所缺单词
    Tom is a____boy. He is eleven years old. He's two years younger than his____, Jim. Tom is 150cm and Jim is 160cm. Jim is 50 kilos and Tom is 60 kilos. Tom wants to lose some weight, so he tries not to eat too much____. He also____more exercise than____.
    ____morning he gets up earlier than Jim and he goes____for____minutes. He usually does it after school. After dinner, Tom often goes for a ____, and Jim likes____at home. Now Tom is much____than Jim. Jim thinks he____more exercise now. He and Tom will do exercise tighter.

食用油能在水中溶解。（      ）

某学校七年级一班的师生准备第二天到郊外秋游，小亮担心下雨去不了，晚上看了电视上的天气预报后，小亮很高兴。他在预报中听到，明天吹东南风六级，能表示这种风的符号是（    ）

关于声现象，下列说法中正确的是（   ）

已知θ∈0， $\frac{\pi }{2}$ ，直线xsinθ+ycosθ﹣1=0和圆C：（x﹣1）²+（y﹣cosθ）²= $\frac{1}{4}$ 相交所得的弦长为 $\frac{\sqrt{3}}{2}$ ，则θ=____．