1. HCM city is more crowded than Ha Tinh city.
2. I cannot sleep because my neighborhood is very noisy.

3. After John washes his car, it looked very clean.

Giải phương trình

\(\dfrac{x-3}{x-2}\)+\(\dfrac{x-2}{x-4}\)= -1

1. We try to learn hard _______ good marks.
a. to getting     b.so as to get   c. in order to getting   d. so as not to
2. Try to ____ amount of fat in your diet.
a. reuse b. refill c. reduce d. recycle
3. Let play tennis instead of ______ television.
a. watch b. watching c.watched d. to watch

vì góc phản xạ bằng góc tới nên i = i' =130^o:2= 65^o