题目

用所给词的适当形式填空。 （1） Everything is (light) on the moon than on the earth. （2） The girl is good at (sing). She wants to be a singer. （3） Mr. Wang often makes me (laugh) in the class. （4） There are many (different) between you and me. （5） My friend Ann doesn't write as (good) as her sister. 答案：【1】lighter 【1】singing 【1】laugh 【1】differences 【1】well图所示的C为平行板电容器，金属棒ab可沿导轨在磁场中平动，要使电容器上板带正电，下板带负电．则ab应向______（“左”或“右”）平动．