甲基橙呈现黄色，石蕊呈现蓝色的pH范围是 ____

    秦王谓唐雎曰：“寡人以五百里之地易安陵，安陵君不听寡人，何也？且秦灭韩亡魏。而君以五十里之地存者，以君为长者，故不错意也。今吾以十倍之地，请广于君，而君逆寡人者，轻寡人与？”唐雎对曰：“否，非若是也。安陵君受地于先王而守之，虽千里不敢易也，岂直五百里哉？”

House Rules
1. Please clean up before leaving.
2. Showers to be taken before 11 p. m.
3. No staying out ’after 10p. m. unless allowed by me.
4. You may have incoming calls on my mobile phone but no out going calls.
5. Bed time is 11 p. m.
6. Dinner is at 7p. m. unless noticed. (通知). (If you don’t have dinner, you must let us know before 6 p. m. )
7. Keep noise to the least.
8. No smoking in the bedroom.
CB4 1LT
The address you are staying at is:
112 Kendal Way 
Chesterton
Cambridge
 Contact  numbers:
My mobile number  is
07870  347980