Humans _____atmospheric carbon dioxide concentration by a third since the Industrial Revolution began.
B. have increased
C. had increased
D. were increasing
Giải bởi Vietjack
Đáp án đúng là: B
Giải thích: Công thức thì hiện tại hoàn thành – quá khứ đơn:
S + have/ has Ved/ V3 SINCE + S + has/have + V(PII)
Dịch: Con người đã tăng nồng độ carbon dioxide trong khí quyển lên một phần ba kể từ khi Cách mạng Công nghiệp bắt đầu.
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 from 23 to 27.
Deep sleep is important for everyone. The actual amount of sleep you need depends (23)_____ your age. A young child ought to sleep ten to twelve hours, and a teenager about nine hours. Adults differ a lot in their sleeping habits. For most of them, seven to eight hours a night is (24)_____ , but some sleep longer, while others manage with only four hours.
For a good night, having a comfortable (25)_____ to sleep is very important. Also, there should be (26)_____ of fresh air in the room. A warm drink sometimes helps people to sleep although it is not a good idea to drink coffee immediately before going to bed.
If you have to travel a very long distance, try to go to bed earlier than usual the day before the journey. This will help you to feel more (27)_____ when you arrive.
Studies reveal that food production will need to increase by 70 percent to _____the over 9 billion people on the Earth.
“If you don’t pay the ransom, we’ll kill your son,” the kidnappers said to them.
He was frequently criticised for his self-centred attitude but was nonetheless very popular.
He had spent all his money. He decided to go home and ask his father for a job.
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
One of the (A) most important tasks (B) of parents is to teach (C) their kids to live independent (D).
Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.
My own _____for health is less paperwork and more running barefoot through the grass.
