Part A - Multiple choice 1. __________ did she go to the dentist last week? * a.When b.What c.Why d.Who 2.You shouldn’t eat too much sweet things ___________ it’s not good for your teeth. * a.because b.because of c.so d.why 3. She had to work ___________. * a.hard b.hardly c.difficult d.difficultly 4. I was really happy _____________ Mark again yesterday. * a.seeing b.see c.to see d.to seeing 5. He’s bad _____________ History. * a.in b.at c.for d.to 6. I have a toothache so I’m going to the _____________. * a.nurse b.doctor c.dentist d.teacher 7. Don’t eat too ……………. candy. * a.much b.many c.lots of d.a lot of 8. ………….. come to the meeting last night?- Because I was busy. * a.Why did you b.When did you c.Why didn’t you d.What did you 9. ……………………… is a person who lives near you. * a.Hairdresser b.Neighbor c.Teacher d.Dressmaker 10. She needs …………………….. those medicines. * a.has b.to have c.having d.to having

ai là cha đẻ của kiến trúc máy tính điện tử

Giải giúp mình với ạ. Mình cảm ơn

Diện tích trong một mảnh đất được sử dụng như sau 5/1 diện tích mảnh đất để trồng cây,1/2 diện tích mảnh đất để làm nhà, diện tích còn lại của mảnh đất để đào ao. Hỏi diện tích để đào ao chiếm bao nhiêu phần diện tích của mảnh đất 5

cảm nhận 4 khổ thơ cuối bài thơ ánh trăng

4. are/favorite /cabbages /my / food/.

cần giúp !!!! bị gank mọi người ơi

Bài 1: Cho hình hộp chữ nhật ABCD.A'B'C'D' có AB=AA'=a, AD=2a. Tính góc giữa đường chéo A'C và mặt phẳng đáy ABCD. Bài 2: Cho hình chóp S.ABCD có đáy ABCD là hình chữ nhật. M là trung điểm CD. Biết SA=SB=SC=SD=a căn 2 , đường tròn ngoại tiếp ABCD có bán kính bằng a. Gọi anpha là góc giữa SM và mặt đáy. Tính tan anpha ?

281,6:0,01 bằng mấy Giúp em với ạ

I. Pronunciation : 1. A. description B. tradition C. question D. expression 2. A. depth B. refer C. beneath D. secret 3. A. destroyed B. depressed C. filled D. answered Main stress 4. A. destruction B. industry C. addition D. electric 5. A. against B. conserve C. frequent D. remove II. Mark your answer to show the underlined part that needs correcting 6. Because of his mother has been seriously ill, she can’t come to the party. A. Because of B. has been C. seriously ill D. can’t come 7. I'll pay you double if you get the work finishing by Friday. A. I'll pay B. double C. if D. finishing 8. It often takes the boy about ten minutes to go to school from here by foot A. takes B. ten minutes C. to school D. by foot III. Mark your answer to indicate the correct answer to each of the following questions 9/ What do I think of your purple shoes? Well, they're certainly _______. A. differ B. difference C. different D. differently 10/ This has been a _______ time for us all. A. challenge B. challenger C. challenged D. challenging 11/ Scientists now send submarines to the seabed. A. investigate B. investigative C. investigation D. investigating 12/ I need someone _______ to look after the children while I'm at work. A. depend B. dependence C. dependable D. dependant 13/ These sperm whales to the warm waters to give birth . A. settle B. goes C. relocate D. migrate 14/ They knew there must be trouble unless the report was by the next day. A. finish B. finishes C. finishing D. finished 15/ You _______ show this letter to anyone else. A. mustn't B. didn’t have to C. couldn’t D. didn’t need 16/ I wouldn't work for them even if they _______ me twice my current salary. A. paid B. had paid C. have paid D. pay 17/ If anyone _______ for me, please tell them I'll be back in the office at 4 o'clock. A. rang B. had rung C. rings D. has rung 18/ Many people are very concerned about the _______ of the rainforests. A. lost B. loss C. lose D. losing 19/ When preparing meals, you need to think about _______ and taste as well as nutritional value. A. variety B. various C. varied D. variable 20/ Some marine animals are dangerous to humans. A. living in the mountain B. living in the ocean C. living in the forest D. living in the house 21/ Sperm whales and sharks are carnivores. A. animals that live in the sea B. animals that only eat plants C. fish that aren't born from eggs D. animals that eat meat 22/ Zoos nowadays are very about their image. A. sense B. sensitive C. sensible D. senseless 23/ A novelist is a person who has a very mind. A. image B. imagine C. imaginative D. imagination 24/ Most of the old part of the city was _______ by bombs during the war. A. planted B. destroyed C. eliminated D. worried 25/ We would never know the true of the loss of forest. A. interest B. value C. conserve D. cost 26/ The floor was covered in tiny pieces of paper. A. unimportant B. many C. very large D. extremely small 27/ He put an arm around her shoulder _______. A. protected B. protection C. protective D. protectively 28/ Her _______ of English grammar is very extensive. A. know B. knowable C. knowledge D. knowing 29/ If modern technology did not exist, we would never have such precious information. A. valuable B. precise C. confidential D. detailed 30/ The new job will provide you with _______ experience. A. value B. valued C. valuable D. invaluable 31/ It is a smart to buy a large packet because it works out cheaper in the end. A. choice B. choose C. chose D. choosing 32/ We all enjoyed the waters of Timor Sea and the coral reefs that lie . A. under B. behind C. beneath D. beside 33/ Some tiny organisms are along by the currents. A. carried B. taken C. flowed D. moved 34/ is a chemical used for killing- weeds. A. Pesticide B. Herbicide C. Fertilizer D. Antibiotic 35/ He is a biologist. He spends all his life studying sea plants and animals. A. ocean B. marine C. botany D. sea