Cho hình thang ABCD, góc A\(=\)góc D\(=\)90\(°\), hai đường chéo vuông góc với nhau tại O . cho biết AD\(=\)12cm,CD\(=\)16cm . Tính các độ dài OA,OB,OC,OD

A\(=\)\((3\sqrt{8}+2\sqrt{50}-4\sqrt{72})\)\(➗\)\(8\sqrt{2}\)

B\(=\)\((-4\sqrt{20}+5\sqrt{500}-3\sqrt{45})\div5 \)

C\(=(\dfrac{\sqrt{3}+1}{\sqrt{3}-1}-\dfrac{\sqrt{3}-1}{\sqrt{3}+1})\div\sqrt{48}\)

cho điện mạch gồm :1 cầu chì , 2 công tắc, 3 dây sợi đốt ,đèn1 và đèn 2 có điện áp định mức là 110v công suất 80w đèn 3 có điện áp định mức là 220v công suất 100w biết nguồn điện sử dụng có điện áp định mức là 220v. em hãy vẽ sơ đồ nguyên lý mạch điện trên

Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.

Question 24. We’ll go to the museum if it__________fine this afternoon.

A.will be B.are C.is D.was

Question 25. Can you open this__________of juice for me? I just can’t do it!

A.glass B.tube C.carton D.packet

Mark the letter A, B, C or D to indicate the word whose underlined part is pronounced differently from that of the rest in each of the following questions.

Question 26.

A.realise B.devise C.promise D.recognise

Question 27.

A.honest B.exhibit C.honour D.honey

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions.

Pronouncing a language is a skill. Every normal person is an expert in the skill of pronouncing his own language; but few people are even moderately proficient at pronouncing foreign languages. There are many reasons for this, some obvious, some perhaps not so obvious. But I suggest that the fundamental reason why people in general donot speak foreign languages very well is that they fail to grasp the true nature of the problem of learning to pronounce, and consequently never set about tackling it in the right way. Too many people fail to realize that pronouncing a foreign language is a skill – one that needs careful training of a special kind, and one that cannot be acquired by just leaving it to take care of itself. I think even teachers of languages, while recognizing the importance of a good accent, tend to neglect, in their practical teaching, the branch of study concerned with speaking the language. So the first point I want to make is that English pronunciation must be taught; the teacher should be prepared to devote some of the lesson time to this, and should get the student to feel that here is a matter worthy of receiving his close attention. So, there should be occasions when other aspects of English, such as grammar or spelling, are allowed for the moment to take second place.

Question 28. The writer argues that going about the problem of pronunciation in the wrong way is________.

A.a consequence of not grasping the problem correctly

B.not an obvious cause of speaking poorly

C.an obvious cause of not grasping the problem correctly.

D.a fundamental consequence of not speaking well

Question 29. The underlined word “aspects” in the passage probably means________.

A.sentences B.words C.pronunciation D.parts

Question 30. The best way of learning to speak a foreign language, he suggests, is by_________.

A.taking on systematic work

B.picking it up naturally as a child

C.not concentrating much on pronunciation

D.learning from a native speaker

Question 31. The underlined word “one” in the passage refers to_________.

A.special kind B.skill C.careful training D.itself

Question 32. What does the writer actually say about pronouncing foreign

languages?

A.No one is really an expert in the skill.

B.Only a few people are really proficient.

C.There are a lot of people who are moderately proficient.

D.There aren’t many people who are even fairly good.

Read the following passage and mark the letter A, B, C or D to indicate the correct word that best fits each of the numbered blanks.

Do you feel depressed? Do you and your brothers or sisters seem to argue all the time and you don’t understand why? Does your brother or sister (19)_________you or is everything around you not what it should be?

Statistics show that there are times in every family (20)_________things just get out of control. It’s nobody’s fault, but it’s everybody’s responsibility. At times like that, Family Helpline can help. We care about families and we want to help you (21)_________your family work again. Our counsellors deal with people just like you all the time. We are not always (22)_________, but we do help many families to live together again in peace.

Our assistants help you to stop accusing each other of causing the problem. You all want to find a (23)_________, and sometimes talking to someone outside the family can make a difference. So if you need us, call 2222-3489. We are available 24 hours a day, seven days a week.

Question 19.

A.encourage B.excite C.accuse D.annoy

Question 20.

A.which B.while C.where D.when

Question 21.

A.allow B.assist C.let D.make

Question 22.

A.logical B.valuable C.available D.successful

Question 23.

A.conclusion B.method C.solution D.result