1) I need ( measuring/ to measure/ measure) your height.

2) How ( height/weight/ heavy) is Nga?- She is 36 kilos

3) ( Would/ Can/ Do) you lend me your pen, please?

4) You should ( to wash/ washing/ wash) your hands before meals

5) The medicines ( prevented/ relieved/ protected) the pain in my chest

6) The nurse told Hoa ( to return/ returning/ return) to the waiting room

7) Everybody (knows/ to know/ know) the symptoms, but nobody( know/ knowing/ knows) a cure

8) ( What is your weight?/ How height are you?/ What is your height?) I'm one metter fifty centimeters tall

9) Your( height/ weight/ temperature) is 37⁰C

10) The students are having a ( scales/ measure/ medical) check- up

a)\(\dfrac{-1}{21}+\dfrac{-1}{28}=\dfrac{-4-3}{84}=\dfrac{-7}{84}=\dfrac{-1}{12}\)

b)\(\dfrac{-8}{18}-\dfrac{15}{27}=\dfrac{-24-30}{54}=\dfrac{-54}{54}=-1\)

c)\(\dfrac{-5}{12}+0,75=\dfrac{-5}{12}+\dfrac{3}{4}=\dfrac{-5+9}{12}=\dfrac{4}{12}=\dfrac{1}{3}\)

d)\(3,5-\left(-\dfrac{2}{7}\right)=\dfrac{7}{2}+\dfrac{2}{7}=\dfrac{49+4}{14}=\dfrac{53}{14}\)

+Bộ phận dẫn điện điện dùng để cho nguồn điện đi qua để vật hoạt động

+Bộ phận cách điện dùng đề khiến cho người dùng không bị điện giật khi sử dụng

There are least 2,000 different languages in the world. Of all these languages, English is the most (1) widely used. It is used by business people, airline pilots and sea captains all over the world. It is also the first language (2) of sports and science. So it is very (3) important to learn English. Chinese is also an important language because it has the (4) greatest numbers of speakers. There are not only one billion people living in China today, but also many Chinese people (5) living outside China. Chinese is widely (6) spoken in many parts of Asia and Africa. Russian is spoken in both Europe and Asia. French is widely (7) used in Europe and in parts of Canada, Africa and Asia. From more than 2,000 languages, the United Nations has (8) chosen six of them for business. They are Arabic, Chinese, English, French, Russian and Spanish.

There are least 2,000 different languages in the world. Of all these languages, English is the most (1) widely used. It is used by business people, airline pilots and sea captains all over the world. It is also the first language (2) of sports and science. So it is very (3) important to learn English. Chinese is also an important language because it has the (4).............................. numbers of speakers. There are not only one billion people living in China today, but also many Chinese people (5) living outside China. Chinese is widely (6) spoken in many parts of Asia and Africa. Russian is spoken in both Europe and Asia. French is widely (7) used in Europe and in parts of Canada, Africa and Asia. From more than 2,000 languages, the United Nations has (8) chosen six of them for business. They are Arabic, Chinese, English, French, Russian and Spanish.

1) Hoa is having a ...medical..... check - up MEDICINE

2) Edison's most famous .....inventor..................... was the electronic bulb INVENT

Medical (adj)

Inventor là danh từ chỉ người

vật dẫn điện được làm ra bởi chất dẫn điện, ngược lại vật cách điện được làm ra bởi chất dẫn điện

VD: + đồng, sắt,... là các chất dẫn điện dùng để chế tạo lõi dây dẫn là vật dẫn điện

+ Các vật liệu như vải, cao su là chất cách điện dùng để làm găng tay cách điện

Đóng K1,K2 thì Đ1 sáng

Mở K1,K2 thì Đ1,Đ2,Đ3 sáng

Đóng K1,mở K2 thì Đ2, Đ3 sáng

Mở K1, đóng K2 thì không có đèn nào sáng