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Tổng số hạt proton,nơtron và electron trong nguyên tử của một nguyên tố Z là 24 .Số khối nhỏ hơn 17 a.Tính số hạt p,e,n trong nguyên tử Z
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I, PHONETICS. 1, Choose the word which has underlined part pronounced differently from orhers. 1, A - laid B - said C - paid D - plain 2, A - passage B - teenage C - cottage D - village 3, A - ploughed B - weighed C - coughed D - borrowed 4, A - cable B - station C - answer D - latest 5, A - moderate B - chopstick C - pork D - possible 2, Choose the word which has different stress from the others. 1, A - material B - ocean C - dolphin D - yesterday 2, A - altogether B - decorate C - delicious D - grandmother 3, A - neglect B - appointment C - remember D - hygiene 4, A - sensible B - continue C - example D - contestant 5, A - appear B - explain C - polish D - perform II, VOCABULARY AND STRUCTURES 1, Choose the best option. 1, Oh , my tooth .... A - is hurting me B - hurts me C - hurts D - all are correct 2, Their new apartment is ...the other side of Ha Noi A - at B - to C - on D - in 3, Who ....the first typewriter? A - did invent B - invented C - did he invent D - invents 4, How heavy are you? A - How much weight do you have? B - How many kilos are you heavy? C - How much do you weigh? D - What is the heaviness? 5, One way to stop tooth decay is ...... less sugar. A - you eat B - to eat C - for eating D - you are eating 6,..........in town , mine is the largest A - Of all schools B - all of the schools C - In all schools D - Of all the schools 7, Sugar adds taste .....the food we eat A - for B - with C - to D - in

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