短文填空。

Apples’ Words

I am an apple. You can find me all around the world (世界各地). I am not like my brother----pear. I am rounder (更圆). I am not like my sister----banana, either. She is longer(更长). I am delicious, so people all over the world like to eat me. I am very cheap, I can keep people healthy. There is an old English saying(谚语): An apple a day keeps the doctor away.

小题1:The apple’s brother is _____________.

小题2:Banana is the apple’s _____________.

小题3:Apples are _________, so we like to eat them.

小题4:An apple a day keeps the _________ away.

小题5:I am very cheap _______ I can keep people health.

转辙角ß的大小是影响侧向过岔速度的关键，在一定速度下，（）。

A.ß越大，动能损失ω越小，允许过岔速度越大

B.ß越大，动能损失ω越大，允许过岔速度越小

C.ß越小，动能损失ω越大，允许过岔速度越大

D.ß越小，动能损失ω越小，允许过岔速度越小