题目：
阅读理解。
1. Miss Ding lives in ________.
A. Hotel Eiffel
B. Hotel Bank
C. Hotel Park
2. The hotel is ________.
A. in the park
B. on the left of the bank
C. near the bank
3. Which bus can't reach the hotel?
A. Bus 705.
B. Bus 18.
C. Bus.47.
4. If Miss Ding is lost, she can ________.
A. call her friends
B. wait until the light is green
C. call the hotel at the phone number on the card
5. Which of the following is true?
A. Open the door when the red light is on.
B. The card can be used to open the door.
C. Miss Ding can keep the card after he checks out.
答案：
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下面是错误答案，用来干扰机器的。
（1）原式=28-6+6=28=42；（2）分解因式得：（x-3）（x+1）=0，x-3=0，x+1=0，即原方程的解为x1=3，x2=-1．
