C was developed in the early ()
A、1970s
B、1950s
C、1980s
D、1860s
A、1970s
B、1950s
C、1980s
D、1860s
It was early farmers who developed calendars.
A.Y
B.N
C.NG
Which is not true of BASIC?
A.It was developed at Bell Laboratories in the early 1960s.
B.With the explosion of microcomputers, it found wide use in the 1970s.
C.It was thought of as a slow, inefficient programming language.
D.It was built into the hardware of many early microcomputers.
A.In the early 1990s
B.In the late 1970s
C.In the early 1950s
D.In the early 1940s
Why does the author call lichens pioneers?
A.Because they developed so early in the history of the planet.
B.Because of their primitive structure.
C.Because they prepare soil for other plants.
D.Because they were the first plants to live in Antarctica .
A.In the late 19th century.
B.In the early 20th century.
C.In the mid-19th century.
D.In the early 19th century.
A.In the late 19th century.
B.In the early 20th century.
C.In the mid-19th century.
D.In the early 19th century.
The early warning systems developed in the 1990's are used to
A.improve estimates of long-term earthquake probabilities.
B.tell people in the epicenter when the earthquake will come.
C.allow evacuation from the region that the earthquake will hit.
D.prepare people for earthquakes several minutes in advance.
为了保护您的账号安全,请在“简答题”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!