Trên nửa đường tròn tâm O đường kính AB ; lấy 2 điểm M,N sao cho \(\stackrel\frown{AB}=\stackrel\frown{MN}=\stackrel\frown{NB}\) . Gọi P là giao điểm của AM và BN , H là giao điểm của AN và BM .Cmr :
a, Tứ giác AMNB là hình thang cân
b, 4 điểm P,M,N,H cùng thuộc 1 đường tròn
c, \(PH\perp AB\)
d, ON là tiếp tuyến của đường tròn đường kính PH
1.I'm going to ask my dentist............out his tooth.
A.to take B. taking C. taken D.take
2.Mrs.Campbell's got there young children and she has to do ................... of washing.
A.much B.many C.great many D.a lot
3.Now both machines are working, and Mrs.Campbell's ........................ us a cup of tea.
A.doing B.cooking C.boiling D.making
4.The selling price of that house and ..................... is 24,000 dollars.
A.many furniture B.some furniture C.many furnitures D.some furnitures
5.We ......................... spend our summer in the mountain.
A.didn't used to B.didn't use to C.did not use to D.used not to
6.I was very mused. I laughed ........................
A.all the beginning B.from beginning to end
C.beginning to end D.through beginning to end
I. Replace the worlds in brackets in the following sentences with a suitable phrasal verb.(make any other necessary changes.)
| clear up | go down with | come across | fall through | cut down on | come up against | look up to | fall off | break down | bring out |
1.The only teacher I ever (admired) ............................. at school was Mr Whiteside, the English master.
2.It was while I was clearing out the attic that I (found by accident) .......................... some old photograps of my sister's wedding.
3.I had never (been faced with) ............... the problems of loneliness and isolation untill I cameto Sweden.
4.Although the attendance was excellent at the start of the season, Chelsea played so badly that, by January, the attendance had (decreased) ........................... by as much as 50%.
5.I see they're going to (publish) ............................... a book of Peter's poems in the autumn.
6.They were planning to hold a Pop Concert in one of the parks but it (failed to materialize) ........................ owing to opposition from the local residents.
7.I've tried to (reduce) ............................ the number of cigarettes I smoke but it's far too difficult, I'm afraid.
8.I do hope it (becomes fine) ....................... soon. Otherwise, we won't be able to have our picnic.
9.I'm afraid Pauld can't come with us after all - he's just ( become ill with) ............................... flu.
10.I'm sorry I'm late, but my car ( stopped working) .................... on the way here, so I had to phone for a taxi.
| ease off | drop in | stand for | do away with | fall through |
1.This time you've gone too far. I won't ................. such behaviour. I'm going to report you to the boss.
2.I should be in Italy now but my holiday plans ................ when the travel company went bankrupt.
3.Guess who ................ when you were out.
4.With the introdution of computers, a lot of firms have begun to ............................ the outdated clerical sytems.
5.It's pouring. Let's wait for the rain to ...................... before we go shopping.
| catching up with | giving off | taken in | takes after | pick out | turn up | used up | looking into | stand by | brought about |
1.There's no more nk in the cartridge. It' been .....................................
2.You may feel secure. I won't let you down. I will ....................... you whatever happens.
3.The police have been .................... the burglary case for 3 weeks now but their investigation has made little progress.
4.You are supposed to ............... only those items, which have at least two features in common.
5.I'd rather we didn't eat the fish. Don't you think it is ...................... a strange smell?
6.Honestly, he is very clever at inventing stories .................... . In the beginning, we were all ............................... by the ones he told us yesterday.
7. Many changes in the climate have been .......................... by global warming.
8.Don't you think Patrick ........................ his grandfather?They both have got equally blue eyes and blond hair.
9.Thousands of enthusiasts all over the world gathered to see the famous film star, but to their disappoitment, she didn't ............................
10.Roger had no problems .................. the other pupils even though he started school with a two-month delay.
| back up | put down to | run out of | print out | take up | work out |
1.Check your work on the screen. Onc you're satisfied, you can ....................a copy.
2.If the printer .............. paper, a warning light indicates that yu need some more.
3.The boss said it was nobody's fault but we ......................... it ...................... bad programming on the part ofthose "experts" at head office.
4.The program ............... a lot of dish space so there wasn't much room for anything else.
5.Calculations which used to take ages can now be ................. in a few seconds.
| cut out | go through | stand up to | filter out | wire up | top up |
1.This water pump has a special device it on .......................... any impurities.
2.No wonder the fridge didn't work. You hadn't .............................. the plug correctly.
3.These machines need to be solid. They have to .............................. a lot of rough treatment.
4.Every time we start up the drilling machine we had to ........................... a strict safety procedure to prevent any accident.
5.The engine kept ................. and then starting again a few seconds later.
I. Fill in each blank in the following sentences with a proper preposition given in the box. There are more prepositions than needed. Write your
answer in the corresponding numbered boxes on the answer sheet.
| off | for | down | around | on | up | out | over |
1.Suddenly the lights went out, and she wasn't able to make .................. where the exit was.
2.Her father decided to hand ...................... his entire estate to her.
3.I have a spitting headache, and I certainly don't feel ........................ to going to watch a concert.
4.While the office computer system was being fixed, there was nothing to do so we just sat ....................
5.She wasn't interested in his money. She fell ......................... his sense of humour.