更多"Researchers all over the world have"的相关试题:
[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]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]It's quite ______ me why such things have been allowed to happen.
A. for
B. behind
C. against
D. beyond
[单项选择]A: Have you heard that all flights have been cancelled because of the weather
B: ______.
[单项选择]There have been some changes in gender roles over the years. In the past, it was usually the men who ______ dates and paid all the expense. But now women may do the same, too.
A. initiated
B. boosted
C. evoked
D. undertook
[单项选择]Over the centuries, various theories have been （） to explain the origin of alphabetic writing.
A. advanced
B. subjected
C. released
D. abandoned
[单项选择]All his investments have been successful and he was believed to be (extreme) ______ rich.
[单项选择]Not all the new drugs have been sufficiently tested for safety.
A. 所有的新药都未进行必要的安全检查。
B. 所有的新药都未必进行过充分的检查。
C. 并非所有的新药都进行了必要的安全检查。
D. 并非所有的新药都经过了充分的安全检测。
[单项选择]There could have been a war over it but in the end reason ______.
A. prevailed
B. counted
C. induced
D. survived
[单项选择]All of the plants now raised on farms have been developed from plants （ ） in the wild.
A. once they grew
B. that once grew
C. they grew once
D. once grew
[单项选择]All of the plants now raised on farms, have been developed from plants ______ wild. ( )
A. once they grew
B. they grew once
C. that once grew
D. once grew
