【单选题】The purpose of the Sylvia Center is to______.
A.
let the kids plant and cook fresh food by themselves
B.
show city kids where real food comes from and what it tastes like
C.
prevent the kids from eating processed food, soda and sweets
D.
convince children to change their unhealthy eating habits
【单选题】近半个世纪以来,汽车技术的发展主要是汽车( )。
【单选题】近半个世纪以来,汽车技术的发展主要是( ) 。
【单选题】近半个世纪以来,汽车技术的发展主要是汽车的
【简答题】设 的三个内角 、 、 所对边的长分别是 , , 且 ,若 , 那么角 A 的大小为 .
【简答题】在△ABC中,角A、B、C对应的边分别为a、b、c,若 ,那么 c = ____★____ .
【简答题】若数据80、82、△、79、69、74、78的众数是82,那么△是______.
【简答题】(本题满分12分) 设 、 是两个不共线的非零向量( ). (I)记 ,那么当实数t为何值时,A、B、C三点共线? (II)若 ,那么实数 x 为何值时 的值最小?
【判断题】新车推介中需要以客户为主,根据客户的需求为推介准绳()
【单选题】What is the main purpose of this passage?
A.
To let teachers pay attention to the effects of attitudes in the process of education.
B.
To tell people that development of attitudes is more important than learning itself.
C.
To develop teachers' positive attitudes towards every part of knowledge.
D.
To teach children how to avoid being scared.