更多"But from the start of their experim"的相关试题:
[单项选择]But from the start of their experiments, the Wright brothers found that they needed money to pay _______ their research.
A. back
B. down
C. for
D. off
[单项选择]It can be learned from the text that new start-ups
A. usually end up with a failure.
B. are subjected to rigid supervision.
C. tend to collapse as a whole.
D. never take into account failures.
[单项选择]Numerous experiments have demonstrated that mass is ______ to energy.
A. convertible
B. exchangeable
C. transplantable
D. conceivable
[单项选择]What do experiments show about our memories
A. We are more likely to remember things we do than things we see.
B. People always remember pleasant things rather than unpleasant ones.
C. Our ability to remember something depends on our feelings when it happens.
D. We tend to have better long-term memories than short-term memories.
[单项选择]Experiments in the photography of moving objects ______ in both the United States and Europe well before 1990.
A. have been conducting
B. were conducting
C. had been conducted
D. are conducted
[单项选择]With the success of experiments on vaccine against some forms of cancer, the research group has been ______ itself up for the furtherance of research in this field.
A. preparing
B. equipping
C. gearing
D. framing
[单项选择]Those experiments have laid a solid foundation for his（）research in material science。
A. far
B. deep
C. farther
D. further
[单项选择]Dr. Tichauer started his experiments initially to______.
A. improve efficiency
B. increase production
C. reduce work load
D. improve comfort
[单项选择]Plateau's experiments were the first steps leading to the invention of ______.
A. eyeglasses
B. telescopes
C. bifocals
D. motion pictures
[单项选择]At the present time, experiments are being conducted in ______.
A. manipulating weather
B. determining density of pressure groups
C. 30-day "outlooks"
D. controlling storms
[单项选择]The aim of controlled scientific experiments is ______.
A. to explain why things happen
B. to explain how things happen
C. to describe self-evident principles
D. to support Aristotelian science
