Trộn 100ml dung dịch NaOH 1M với 100ml dung dịch Fe(NO3)2 1M , phản ứng hoàn toàn thu được chất rắn x và y . Tính nồng độ mol của các chất còn lại trong dung dịch y ( coi như thể tích dung dịch sau phản ứng thấy đổi không đáng kể )

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19. He’s betrayed you twice. He’s ruined _____ your trust _____ your love for him. A. either ... or B. neither ... nor C. either ... neither D. not only ... but also 20. I have a little bit of confusion. The speaker didn’t ______ confirm ______ deny the story. A. either ... or B. both ... and C. neither ... nor D. not only ... but also 21. It requires the labor of thousands to make a pencil. ______, they are so inexpensive as to be almost free. A. Therefore B. Moreover C. Or else D. Yet 22. He is my sworn enemy, ______, I admire him as the wisest man in the world. A. thus B. in addition C. still D. as a result 23. The equipment is ______ new ______ safe. Do not purchase it! A. either ... or B. both ... and C. neither ... nor D. not only ... but also 24. I don’t know where she is. She’s at the office ______ at the airport. A. and B. or C. but D. so 25. The meal was awful ______ expensive. ______, many people were still eager to try it once. A. but ... And B. but ... Moreover C. but ... As a result D. but ... However 26. Jack won’t move to Paris. He doesn’t have enough qualifications to work there, ______, he can’t speak French. A. yet B. but C. therefore D. besides 27. ______ you buy some chicken nuggets for me ______ I will tell Mom that you’ve broken her favourite flower vase. Better be wise! A. Not only ... but also B. Both...and C. Neither ... nor D. Either ... or 28. We use this washing machine a lot and ______ have to maintain it once a month. A. however B. additionally C. consequently D. otherwise 29. I thought the plane would be delayed. _____, I bought a lot of magazines to read while waiting. A. Yet B. And C. So D. But

Choose a, b, c, or d that best completes the sentence. 1. New York is _______ Seattle. A. larger than B. more large than C. as larger than D. more larger than 2. Our house is _______ yours. A. as big than B. as bigger as C. bigger than D. more big than 3. City life is _______ country life. A. as busier as B. busier than C. more busier than D. most busy as 4. Of the two, the round table is _______. A. the nicest B. a nice one C. nicer D. the nicer 5. I feel _______ better than I did yesterday. A. a little B. more C. a few D. many 6. There is nothing _______ travelling abroad. A. more interesting than B. more interesting as C. as interesting than D. the most interesting than 7. He finds physics _______ other science subjects. A. far more difficult than B. much difficulter than C. too more difficult than D. more much difficult than 8. His car is _______ mine. A. more expensive and faster than B. faster and more expensive than C. more faster and expensive than D. more expensive than and faster than 9. The cuisine of France is _______ A. more famous than that of England B. famous than the cuisine of England C. more famous than which of England D. as famous than that of England 10. Russian is a _______ language to learn than English is. A. difficult B. more difficult C. most difficult D. more and more difficult 11. He has _______ his sister does. A. as friends as B. more friends as C. many friends than D. more friends than 12. There are _______. A. twice as much computers in our office as there was B. as twice many computers in our office as they were C. twice as many computers in our office than there used to be D. twice as many computers in our office as there used to be 13. Silver is not _______ gold, A. as much heavy as B. so heavy than C. more heavier as D. so heavy as 14. I think cow is _______ of all animals. A. most useful B. less useful C. the most useful D. the more useful 15. The new machines use _______ the old ones. A. less water and electricity more than B. less water and electricity than C. less water and electricity D. as less water and electricity than 16. Try to do this test. It is _______ than the others. A. less difficult B. less and less difficult C. least difficult D. more and more difficult 17. Summer is _______ season of the year. A. hottest B. the hottest C. the hotter D. the more hottest 18. It is one of _______ books I have ever had. A. most useful B. the most useful C. the most useful than D. the most useful as 19. Of all athletes, Alex is _______. A. the less qualified B. the less and less qualified C. the more qualified D. the least qualified 20. Mary was _______ of the two sisters. A. the clever B. as clever as C. the cleverer D. the cleverest 21. _______ you get to the cinema, _______ seat you have. A. The sooner / the better B. The soon / the good C. The soonest / the best D. Sooner / Better 22. The picnic was _______ I had expected. A. more a hundred times fun than B. a hundred times fun more than C. a hundred times more fun than D. more fun than a hundred times 23. _______ he drank, _______ he became. A. More / more violent B. The most / the most violent C. The more / the more violent D. The less / less violent 24. She is _______ her colleagues. A. as intelligent than B. so more intelligent than C. few more intelligent than D. a lot more intelligent than 25. After three months’ practice, Peter can run _______. A. fast and fast B. faster and faster C. the more and more fast D. more and more fast 26. Her husband is _______ she is. A. ten years older than B. as ten years old as C. older ten years than D. so many ten years older 27. Rolls Royce is _______ any other car. A. much more expensive than B. as much expensive than C. so much expensive as D. very more expensive than 28. They are _______ they used to be. A. less wealthy as B. as less wealthy as C. less wealthy than D. less wealthy more than 29. Today women do not have _______ they used to years ago. A. as much children as B. as many children as C. as children as D. more children as 30. _______ money he makes, useless things he buys. A. More / more B. The more / the more C. More / the more D. The most / the most Mn giải giúp mình với, nhiều bài qué!!!