更多"A number of theories have been prop"的相关试题:
[单项选择]A number of theories have been proposed to explain the situation.
A. suggested
B. tested
C. used
D. announced
[单项选择]Recently a number of eases have been reported of young children ______ a violent act previously seen on television.
A. duplicating
B. modifying
C. accelerating
D. stimulating
[单项选择]A number of theories have been put forward about the possible causes of cancer.
A. 理论上早已预言了癌症的病因。
B. 人们就造成癌症的病因提出了许多理论。
C. 大量的理论已经用于解释引发癌症的原因。
D. 人们已经用大量理论来研究癌症的病因。
[单项选择]Recently a number of cases have been reported of young children ______ a violent act previously seen on television.
A. modifying
B. duplicating
C. accelerating
D. stimulating
[单项选择]______ a large number of students have been unable to find accommodations on campus this year.
A. Every
B. Quite
C. All
D. Both
[单项选择]What products have been damaged
A. Wheat, corn, meat and sugar.
B. Wheat, maize, cotton and meat.
C. Wheat, cotton, meat and bean.
D. Wheat, sugar, meat and bean.
[单项选择]Manyscientists have been probing psychologicalproblems.
A. solving
B. exploring
C. settling
D. handling
[单项选择]Conditions everywhere have been seriously worsened, ______ the postwar rise in prices.
A. as to
B. in relation to
C. owing to
D. with regard to
