Trắc nghiệm tổng hợp Tiếng anh có đáp án 2023 (Phần 18)

Find the mistake and correct

Even if rural areas are winning or losing from increased trade, however, remains uncertain.

Indicate the word(s) OPPOSITE in meaning to the underlined word(s)

This restaurant was highly recommended for good service, delicious food and kind- hearted boss.

Rewrite the sentence

Michael lost his job last month, so he cannot buy a car. => If Michael ______.

Rewrite the sentence

The unemployment rate is getting higher, so the crime rate is becoming higher as well.

Which of the following best restates each of the given sentences?

When the unemployment rate is high, the crime rate is usually also high.

Rewrite the sentence

If you do to see Helen, could you ask her to call me? => Should _______

Mark the letter A, B, C, or D to indicate the underlined part that needs correction

You mustn't (A) to drive (B) a car if (C) you don't have (D) a driving licence.

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?