Vẽ bao quanh 1 chục con vật:

Một chất điểm dao động với phương trình dao động là  x = 5 cos 8 π t - 2 π 3  cm. Thời gian ngắn nhất vật đi từ lúc bắt đầu dao động đến lúc vật có li độ x = 2,5 cm là 

A. 3 8 s

B. 1 24 s

C. 1 12 s

D. 8 3 s

Viết theo mẫu

Viết (theo mẫu):

Hãy xác định những câu dưới đây là Đúng hay Sai về mặt ngữ pháp

How many flour do you need for the cake?

A.Correct

B.Incorrect

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

British families started going on holiday to the seaside around the middle of the 19th century. The invention of the railways made this possible. The first holidaymakers were quite rich and went for their health and education. The seaside was a place to be (1)__________of illnesses, and doctors recommended bathing in the sea and drinking sea water. Also to increase their knowledge, families attended concerts and read books from libraries.

At that time, ordinary working people had very little time (2)__________. However, in 1871, the government introduce four “Bank Holidays” – national holiday days. This allowed people to have a day or two out, which now and then gave them a taste for leisure and the seaside. At first they went on day-trips, taking (3)__________ of special cheap tickets on the railways. By the 1880s, rising incomes meant many ordinary workers and their families could have a week’s holiday at the seaside. Rail fares were reduced and cheap hotels were built to (4)__________ them. Holidaymakers enjoyed being idle, sitting on the beach, bathing in the sea, and eating ice-cream. Cheap entertainment was (5)__________ offer and holidaymakers went to have fun. Today, the English seaside remained popular, with more than 18 million holidays taken there each year.

Điền vào số 4

A. cater

B. board

C. lodge

D. accommodate

Cách miêu tả chú chuồn bay có gì hay?