更多"What caused the scientists of Sydne"的相关试题:
[单项选择]______ in a famed university abroad was what his parents wished for.
[单项选择]What caused the deposits
A. The hydrochloric acid broke the carbon bonds in tile carbon dioxide,
B. The magnesium oxide broke the carbon oxygen bonds in the carbon dioxide.
C. The burning magnesium broke the carbon oxygen bonds in the carbon dioxide.
D. The gas collection method broke the carbon-oxygen bonds in the carbon dioxid
[单项选择]Scientists at Camegie Mellon University tried to find out ______.
A. why office doors were often left open
B. when it was a good time to turn off the computer
C. what questions office workers were bothered with
D. which behaviors could tell whether a person was busy
[单项选择]Scientists had thought the "explosion" was caused by ______.
A. a meteor
B. a small comet
C. an spaceship from another planet
D. some big fire
[单项选择]What caused photosynthesis to stop
A. Thousands of species died of starvation.
B. Earthquake and tidal waves.
C. Massive volcanic eruptions and forest fires.
D. Tons of dust and pulverized rock blasted into the atmosphere and blocked out sunlight.
[单项选择]What caused all the trouble
A. A storm.
B. A car accident.
C. A driver driving too fast.
D. A flood.
[单项选择]According to some scientists, what kind of people can benefit most from Tai Chi
A. Healthy but relatively inactive old people.
B. Active but relatively unhealthy old people.
C. Frail old people, just released from hospital.
D. Energetic young people.
[单项选择]The scientists have absolute freedom as to what research they think is the best to______
A. engage
B. devote
C. seek
D. pursue
