第一部分：重点讲解：
1. One of the major problems facing the hill tribe children along the mountainous borders of northern Thailand is poverty. (P59)
face vi. [usually + adv. or prep.] to turn or be turned towards sth. physically; to be opposite: 面对，面向
The terrace faces towards the sea/faces south.
Their houses face each other across the street.
vt. 1) If you face a problem, or a problem faces you, you have to deal with it: 面临问题，（问题等）逼近
Passengers could face long delays.
You're faced with a very difficult choice there.
2) to accept that sth. unpleasant is true and start to deal with the situation: 正视（问题 ）
I think Phil has to face the fact that she no longer loves him.
We have to face facts here - we simply don't have enough money.
face-to-face
