Giải bởi Vietjack
Lời giải:
Đáp án: D
Giải thích: Hành động xảy ra trước hành động khác trong quá khứ => chia quá khứ hoàn thành => had gusted
Dịch: Báo động đã được đưa ra quá muộn vì khi đội cấp cứu đến, không dưới 10.000 gallon dầu đã tràn vào dòng suối.
Mark the letter A, B , C , D to indicate the underlined part that needs correction
Please turn off your television. I also like watching TV but now I am having to study for the exam.
Rewrite the sentence
The unemployment rate is getting higher, so the crime rate is becoming higher as well.
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 questions from 1 to 7
A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometers in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the time it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word “radar”, in fact, gets its name from the term “radio detection and ranging”. “Ranging” is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots, radar is essential for air traffic control, tracking ships at sea, and for tracking weather systems and storms.
What is the main topic of this passage?
Indicate the word(s) OPPOSITE in meaning to the underlined word(s)
Her identity will never be revealed in order to protect her children from being judged.
Rewrite the sentence
If you do to see Helen, could you ask her to call me? => Should _______
Find the mistake and correct
Even if rural areas are winning or losing from increased trade, however, remains uncertain.
Mark the letter A, B , C , D to indicate the underlined part that needs correction
The doctor said that she was making a relatively slow progress because she was quite old.
