A:以卡车为参照物,路灯是向左运动的
B:以自行车为参照物,马路旁的树木是静止的
C:以小轿车为参照物,大卡车是向左运动的
D:以地面为参照物,运动的物体中速度最大的物体是小轿车
已知函数 f(x)=log31−x1+x .
读问句,选择对应的答句。
____①What's the weather like today? A. No, you can't.
____②Where are my books? B. Yes, it is.
____③What time is it? C. It's rainy.
____④Can I wear my new skirt? D. It's twelve o'clock.
____⑤Is it cool? E. They're on the bed.
选出读音全都正确的一组( )