
精确测定可口可乐的PH值,用到的PH缓冲标准溶液有() A.蒸馏水 B.PH=6.86的缓冲液 C.PH=4.00的缓冲液 D.PH=9.18的缓冲液


Fill in the blanks with the right form of key words we have learnt in Unit 1.
1. A spokesman _______that a merger of two companies was likely.
2. What are the factors that ______ to the deaths of Romeo and Juliet?
3. These measures ______ greatly to the economic recovery of that country.
4. Social learning theories ______ to a better understanding of why we behave as we do.
5. Trump has always claimed he is a self-made billionaire. But, he _____ at least $413 million from his father's business empire.
6. During a press conference, President said that he and his administration " _____ a big mess" both at home and abroad.
7. All things are interrelated and _____ with each other.
8. How do I _____ with him after he treated me with so little respect?
9. Divorce is never an easy _____ .
10. I am keeping my _____ open. I have not made a decision on either matter.
11. I gradually _____ that culture and language cannot really be separated.
12. How do you _____ your new role as a father?
13. Resentment is taking poison and waiting for the other person to die.So,never let your _____ build up and blind your good sense.
14. The U.N. human rights office has condemned the shooting of African American man and said the _______use of force by police may violate international law.
15. At some time in their careers, most good historians itch to write a history of the world, ________to discover what makes humanity the most destructive and creative of species.