根据学习动机与学习效果的关系，当学生完成较难的学习任务时，教师应使其动机强度控制在水平。
参考答案：中等偏低
用所给单词的适当形式填空
小题1:These are ______________(strawberry).
小题2:I don’t like ice cream, I like ___________(health) food.
小题3:She has a sports________(collect).
小题4:________he like_________(read) books?
小题5:Thank for___________(help) me.
小题6:That_________(sound) interesting.
小题7:_________(run) star Xing Huina is from Shandong.
小题8:Can you ___________(bring) the pen to me?\
小题9:He only watches__________(they) on TV.
小题10:He ____________(not eat) any ice cream.
一个8位的二进制整数，若采用补码表示，且由3个“1”和5个“0”组成，则最小值为( )。
A．-127
B．-32
C．-125
D．-3
