24. What is suggested as an alternative explanation for the increased number of mutated strains of coronavirus?
(A)Genetic variation
(B)The cold winter weather
(C)Human behavior
(D)The strain on the healthcare system

20. If I had known the college entrance exam was so difficult, I __________ harder.(A) study(B) had studied(C) would have studied(D) would have been studying

21. Which sentence best summarizes the main idea of the news story?(A)America has the highest Coronavirus infection rate, but has so far prevented mutations of the virus.(B)Many countries are discovering more deadly variants of the coronavirus.(C)It is important to close borders to reduce the spread of a new variant of the coronavirus.(D)A new variant of the Coronavirus is more contagious and may already be in America.

22. Where has a new more contagious SARS-CoV2 variant of the coronavirus been detected?(A)New York(B)The United Kingdom(C)South America(D)Mainland Europe

23. Why are US public health experts not very concerned by the new variant?(A)Flights to and from the UK have been cancelled.(B)People in the USA are developing immunity from coronavirus.(C)This was anticipated by health experts and vaccine developers.(D)The US healthcare system is coping extremely well with coronavirus cases.

25. In the second paragraph "pull the trigger on" means... (A)To commit to something (B)To destroy something (C)To take something under consideration (D)To shoot something

26. According to the passage, what was the conflict about?(A) The American team did not like the carpets in the studio.(B) The Japanese team was upset about the misbehavior of American team.(C) The American team installed some electrical components which(D) The Japanese team had more colleagues than the American team.

27. What happened after the major conflict?(A) The two teams worked in a blissful atmosphere.(B) They did not finish the action film.(C) They had poor relationships with one another.(D) The two teams worked efficiently after the event.

28. Look at the four squares [■] in the passage. Where would the following sentence best fit?The Americans agreed to do this but increasingly made 'quick changes' to lighting or electrical components without taking boots off.(A) (1)(B) (2)(C) (3)(D) (4)

29. What was the key element in this event?(A) The stage cover material.(B) The price of production.(C) Cultural difference.(D) Language difference.

30. How did the Japanese colleagues manage to resolve the conflict?(A) They chose to ignore the conflict and let Americans.(B) They sued them in the court and asked for compensation.(C) They stepped on the US flag for revenge.(D) They made the Americans realize their behavior was disrespectful.