HE REALIZED HE HAD FORGOTTEN HIS BOOK ON THE BUS

Câu 45 (VDC):

He arrived in class. He realized he had forgotten his book on the bus.

A.

No sooner had he realized he had forgotten his book on the bus than he arrived in class.

B.

Had he arrived in class, he would have realized he had forgotten his book on the bus.

C.

Only after he had realized he had forgotten his book on the bus did he arrive in class.

D.

Not until he arrived in class did he realize he had forgotten his book on the bus.

Read the following passage and choose the correct answer to each of the following questions.

In an unexpected sign of hope amid the expanding pandemic, scientists at the University of

Oxford said on Tuesday that an inexpensive and commonly available drug reduced deaths in

patients critically ill with COVID-19.

If the finding is officially confirmed, the drug, a steroid called dexamethasone would be the

first treatment shown to reduce mortality in severely ill patients. Had doctors been using the

drug to treat the sickest Covid-19 patients in Britain from the beginning of the pandemic, up to

5,000 deaths could have been prevented, the researchers estimated. In the study,

it

reduced

deaths of patients on ventilators by one-third, and deaths of patients on oxygen by one-fifth.

Until now, hospitals worldwide have had nothing to offer these desperate, dying patients, and

the prospect of a lifesaving treatment close at hand - in almost every pharmacy - was met with

something like

elation

by doctors.

Dexamethasone is the first drug to be shown to improve survival in Covid-19, one of the trial's

chief investigators, Peter Horby, a professor of emerging infectious diseases at the University of

Oxford, said in a statement. The survival benefit is clear and large in those patients who are sick

enough to require oxygen treatment.

However, there is still, obviously, a significant amount of scepticism. While hospitals in the

United Kingdom were allowed to begin treating severely ill COVID-19 patients with

dexamethasone, many experts in the United States demanded to see the data and the study itself,

which have not yet been peer reviewed or published.

(Adapted from nytimes.com)