Một người thợ may 35 bộ quần áo đồng phục hết 70 m vải. Hỏi người thợ may đó may 60 bộ quần áo đồng phục như thế này thì cần bao nhiêu mét vải?

Một khối trụ có thể lăn trên mặt bàn nằm ngang với trọng tâm của nó nằm trên tâm hình học. Cân bằng của khối trụ là

A. cân bằng không bền

B. cân bằng bền

C. cân bằng phiếm định

D. không thể cân bằng

Choose the underlined word or phrase (A, B, C or D) that needs correcting.

My sister enjoys read about wild animals and natural mysteries

A enjoys

B read

C wild animals

D natural

Tính nhẩm: 9 : 9 =

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following question.
It was found that he lacked the ____ to pursue a difficult task to the very end.

A. obligation

B.  engagement

C.  commitment

D.  persuasion

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the question below.

Why is it that many teenagers have the energy to play computer games until late at night but can’t find the energy to get out of bed (35) ________ for school? According to a new report, today’s generation of children are in danger of getting so (36)_______ sleep that they are putting their mental and physical health at (37)_______. Adults can easily survive on seven to eight hours’ sleep a night, (38)_______teenagers require nine or ten hours. According to medical experts, one in five youngsters (39)________ anything between two and five hours’ sleep a night less than their parents did at their age. This (40) _____ serious questions about whether lack of sleep is affecting children’s ability to concentrate at school. The connection between sleep deprivation and lapses in memory, impaired reaction time and poor concentration is well (41) _______. Research has shown that losing as little as half an hour’s sleep a night can have profound effects (42) ______how children perform the next day. A good night’s sleep is also crucial for teenagers because it is while they are asleep (43)______ they release a hormone that is essential for their ‘growth spurt’ (the period during teenage years when the body grows at a rapid rate). It’s true that they can, to some (44) ______, catch up on sleep at weekends, but that won’t help them when they are dropping off to sleep in class on a Friday afternoon. By Tim Falla and Paul A.Davies, Solutions Advanced. OUP

Điền vào ô 44

A. extent

B. rate 

C. level

D. point

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose stress differs from the other three in pronunciation in each of the following questions

A. attend

B. visit

C. apply

D. appear

Hỗn hợp X gồm axit fomic và axit axetic (tỉ lệ mol 1:1). Lấy 6,36 gam X tác dụng với 6,9 gam ancol etylic (xúc tác H₂SO₄) thu được 7,776 gam hỗn hợp este, hiệu suất của các phản ứng este hoá bằng nhau. Giá trị của H là:

A. 60%.

B. 80%.

C. 85%.

D. 50%.