题目

一个乘数不变，另一个乘数乘2，积也乘2。 （____） 答案：【答案】正确 【解析】根据因数与积的变化规律：一个因数不变，另一个因数扩大或缩小10倍、100倍……，积也扩大或缩小10倍、100倍……一个乘数不变，另一个乘数乘2，积也乘2，此题说法正确.故答案为：正确.二、 听录音，选出你所听到的句子。(每小题2分，共10分)() 1. A. How many sunglasses do you have?   B. How much are the sunglasses?   C. How do you like these white sunglasses?() 2. A. They’re cows. B. They are carrots. C. They are just right.() 3. A. It's on the first floor. B. Let's clean the floor. C. It's next to the door.() 4. A. It's sunny here. B. It's cloudy here. C. It's windy here.() 5. A. Are these your gloves? B. Are they your socks? C. Are those potatoes?