آزمون زبان دکتری؛ کدام را بدهم و چطور قبول شوم

1.Not until the late nineteenth century ______ widely used in hospitals.

2.The committee recommended that every applicant ______ a copy of the research proposal.

3.______ the samples had been contaminated, the results of the experiment were discarded.

4.The number of students who apply for doctoral programs ______ increased steadily over the past decade.

5.The samples [A] were collected from three hospitals, and [B] each of them [C] were analysed [D] separately.

6.The professor [A] suggested [B] to revise the [C] introduction before [D] submitting the paper.

7.Despite [A] of the high cost, [B] many universities [C] have invested in [D] new laboratories.

8.The results of the survey [A] was published [B] in a journal [C] that specializes [D] in public health.

9.The findings were ______ with earlier studies, so the team felt confident in its conclusions.

10.Before the trial began, all participants gave their informed ______.

11.What is the main idea of the passage?

12.According to the passage, what happened when deep sleep was interrupted?