[单项选择]Alternatively, researchers seeking access to identifiable, records or specimens can use "expedited" IRB review, in which one board member is ______ to rapidly approve such studies.
A. controlled
B. enrolled
C. enlisted
D. authorized

[单项选择]

Researchers all over the world have been seeking for determining how early infancy conceptual thinking is possible.（）

A. have been seeking about determining
B. have been seeking to determine about
C. have been seeking to determine
D. have sought to determine

[单项选择]A) Alternatively C) Surprisingly
B) Obviously D) Frankly


A. Alternatively
B. Obviously
C. Surprisingly
D. Frankly

[单项选择]Some researchers have undertaken some psychological studies which prove that many children develop fears of ______ dangers.
A. imagination
B. imaginary
C. imaginable
D. imaginative

[单项选择]The main purpose of these researchers is


A. to help to destroy old cells and boost new ones.
B. to alter the natural process known as apoptosis.
C. to compare different levels of proteins.
D. to find out ways to protect aging brain cells.

[单项选择]

British cancer researchers have found that childhood leukaemia is caused by an infection and clusters of cases around industrial sites are the result of population mixing that increases exposure. The research published in the British Journal of Cancer backs up a 1988 theory that some as yet unidentified infection caused leukaemia--not the environmental factors widely blamed for the disease.
"Childhood leukaemia appears to be an unusual result of a common infection," said Sir Richard Doll, an internationally-known cancer expert who first linked tobacco with lung cancer in 1950. "A virus is the most likely explanation. You would get an increased risk of it if you suddenly put a lot of people from large towns in a rural area, where you might have people who had not been exposed to the infection." Doll was commenting on the new findings by researchers at Newcastle University, which focused on a cluster of leukaemia cases around the Sellafield nuclear repro
A. the cluster of leukaemia cases around the Sellafield nuclear reprocessing part
B. the kind of infection that causes childhood leukaemia
C. the causes of childhood leukaemia
D. a new finding by British scientists

[单项选择]Researchers said Monday that having more children will run more risks of developing


A. fat babies with heart disease.
B. blood deficiency.
C. family or financial problems.
D. high levels of fat in bloo

[单项选择]Researchers at the University of Illinois determined that the ______ of a father can help improve a child's grades.
A. involvement
B. communication
C. interaction
D. association

[单项选择]Researchers have discovered that dolphins are able to {{U}}mimic{{/U}} human speech.
A. import
B. imitate
C. impair
D. humor

[单项选择]Researchers discovered that plants infected with a virus give off a gas that ______ disease resistance in neighboring plants.
A. contracts
B. activates
C. maintains
D. prescribes