Dấu hiệu ở đây là:
A.Năng suất lúa tính theo tạ/ha của mỗi thửa ruộng.
B.Năng suất lúa của mỗi xã.
C.Năng suất lúa tính theo tấn/ha của mỗi thửa ruộng.
D.Số tấn lúa của mỗi thửa ruộng.

Through the mass media, people have more opportunities to connect by each other, cooperate and share information and personal experiences.
A.share
B.personal
C.by
D.Through

I ________ the time when I ________ as a teacher.
A.have never forgot / have first worked
B.am never forgetting / first work
C.will never forget / first worked
D.had never forgot / was first working

Shortage of land and funding is blamed for the city's ____ green space.
A.inefficient
B.inaccurate
C.inadequate
D.indispensable

Martin Steven, ______children I have been looking after since I started the university in London, is my history professor.
A.whose
B.which
C.that
D.whom

The speaker paused. He hesitated to answer the direct question raised by the audience.
A.decided
B.continued
C.determined
D.wavered

Một mol khí lý tưởng thực hiện một chu trình \\(1 \\to 2 \\to 3 \\to 4\\) (hình vẽ). Tính \\({p_1};{p_2};{p_3};{p_4}\\)
A.1,23atm;0,615atm;0,615atm;1,23atm
B.0,615atm;0,615atm;1,23atm;1,23atm
C.0,615atm;1,23atm;1,23atm;0,615atm
D.1,23atm;0,615atm;1,23atm;0,615atm

Every time he opens his mouth, he immediately regrets what he said. He is always putting his foot in his mouth.
A.speaking indirectly
B.saying embarrassing things
C.doing things in the wrong order
D.making a mistake

Most of the milk has gone bad. Six glass bottles of milk is still in the refrigerator.
A.the
B.has
C.is
D.in

Ở điều kiện thường, chất nào sau đây làm mất màu dung dịch Br2?
A.Etilen.
B.Propan.
C.Metan.
D.Etan.