感觉适应是指由于强刺激的持续作用而引起的感受性（）的现象。
A.不变
B.提高
C.降低
D.消失
参考答案：B
—If you like the new car, why not buy it?
—But it's really expensive. I can't ______ it. [ ]
A. afford
B. cost
C. spend
D. pay
Труд создает ____ человека.
A．сам
B．самый
C．са(重音)мого
D．cамог
