关于x的方程有两个不相等的实数根.（1）求k的取值范围；（2）是否存在实数k，使方程的两个实数根的倒数和等于0？若存在，求出k的值；若不存在，说明理由.

---Is your uncle still smoking?
---Yes. It’s nearly five years _______ he smoked.

The skirt _________ is made of silk is very expensive. I can’t afford it.

Disney is an amusement park _______ you can find all the normal attractions and Disney movies and characters.

Do you really know _____ used?

Would you please tell me ______ with Peter? He looks unhappy.

–Excuse me, where _____? Do you know?
-Yes. I know where _____?

Did you ask her what ______ outside?

---I wonder if he ______ us in the discussion tonight.
---I believe if he ________ his homework, he will join us.

Mike asked the girl in the shop ____ the watch ____ cheap enough.