【多选题】学习动机与学习效果的关系是:( )
C.
学习动机可以影响学习效果,学习效果也可以反作用于学习动机
D.
学习动机对学习效果的影响是以学习行为为中介的。
【简答题】A.They take s seriously. B.They think s are secondary. C.They think s are the most important. D.Lessons and s are equally important.
【简答题】A.They take s seriously. B.They think s are secondary. C.They think s are the most important. D.Lessons and s arc equally important.
【单选题】以下经胎盘传播 , 造成宫内感染的寄生虫 是
【单选题】直线x-3y=0与二次曲线 的交点个数是( )个
【单选题】Some people in the metal industry think the new trend will ______.
A.
seriously change the way they do business
B.
seriously damage the way they do business
C.
not seriously change the way they do business
D.
not seriously damage the way they do business
【简答题】直线y=-x+m与双曲线 y= n x 交于第四象限一点P(a,b),且a,b是一元二次方程x 2 -2x-3=0的两根. (1)求一次函数、反比例函数的解析式; (2)直线与双曲线的另一个交点为Q,求△POQ的面积(O为直角坐标系的原点).
【单选题】下列全身麻醉药物中,属于静脉麻醉药的是()。