更多"Sound waves reflected from a hill c"的相关试题:
[单项选择]Sound waves reflected from a hill can be used to calculate the______.
A. Speed of sound
B. time between a sound and ifs echo
C. height of the hill
D. distance of the hill
[单项选择]Sound waves reflected from a hill can be used to estimate ____________.
A. height of the hill
B. speed of sound
C. distance of the hill
D. intensity of sound
[单项选择]Radio signals are waves that are used to _________ music or speech.
A. transfer
B. transmit
C. transport
D. transform
[单项选择]From the hill top we can see horses are ______ here and there in the pasture.
A. gazing
B. biting
C. licking
D. devouring
[单项选择]The energy gained from the sun can then be used during the night to enable the necessary chemical reactions to ______ in his body.
A. precede
B. proceed
C. progress
D. practice
[单项选择]Speaker A: Oh, hi Dr. Hill. Can I discuss my grade on my term paper with you now Speaker B: Sure.________
A. What seems to be the problem
B. That seems to be a mistake.
C. I really appreciate it.
D. Could I check back with you later
[单项选择]We can learn from the passage that Blackpool used to
A. have as many beaches as Luxemburg.
B. have seriously polluted drinking water.
C. boast some imposing seafront sights.
D. attract few domestic holiday makers.
[单项选择]Ice can be used to keep food from spoiling.
A. rotting
B. aging
C. toughening
D. evaporating
[单项选择]From the report, we can infer that Fail, ah used to be ______
A. one of US military bases
B. near the Syrian border
C. an insurgent haven
D. the home of Abu Musab al-Zarqawi
[单项选择]Ocean waves can cut imposing cliffs along coastlines.（）
A. immobile
B. impermeable
C. impressive
D. imaginative
[单项选择]（）from the hill, the sense of pride suddenly appeared in our mind.
A. When we saw it
B. Having seen
C. Seeing
D. Seen
