更多"Sulphur has occasionally been found"的相关试题:
[单项选择]Sulphur has occasionally been found in the earth in an almost pure state.
A. regularly
B. accidentally
C. sometimes
D. successfully
[单项选择]Sulphur has {{U}}occasionally{{/U}} been found in the earth in an almost pure state.
A. regularly
B. accidentally
C. sometimes
D. successfully
[单项选择]______ that another earth satellite has been put into orbit.
A) Reporting C) To be reported
B) To report D) It is reported
[单项选择]The history of life on earth has been a history of between living things and their surroundings.
A. interaction
B. intersection
C. interference
D. intercourse
[单项选择]First designated in 1970, Earth Day has become an annual international event ______ concerns about environmental issues such as pollution.
A. dedicated to raising
B. dedicated raising
C. dedicated to raise
D. that dedicates to raising
[单项选择]Electricity has been found worldwide application since it was discovered．
A. 电自从被发现以来已经得到世界上的广泛申请。
B. 人们发现电在全世界范围内供不应求。
C. 电自从被发现以来已经得到世界范围的应用。
D. 自从电被发现以来已在全世界使用。
[单项选择]It has been estimated that the earth's surface temperature has increased ______ one quarter to three fourths of a degree since 1850.
A. by
B. at
C. to
D. with
