更多"You must keep your eyes （）."的相关试题:
[单项选择]Ignore that stunning view and keep your eyes on the road, （）admiring beautiful scenery or dramatic buildings puts drivers at risk.
A. ahhough
B. because
C. whereas
D. while
[填空题]Keep your mouth (shut) ______ and your eyes open.
[单项选择]You must shine your shoes.
A. lighten
B. clean
C. wash
D. polish
[填空题]You must keep this door (close) （ ） at all times when the red light is on.
[填空题]You must keep this door (close) （）at all times when the red light is on.
[填空题]You must keep this door (close)（）at all times when the red light is on.
[单项选择]You should have your eyes tested every year in case the （ ） of your spectacles need changing.
A. lenses
B. glasses
C. sights
D. crystals
[单项选择]You must decide now but you can change your mind （）
A. late
B. later
C. lately
D. latest
[填空题]You must keep this door (close) ______ at all times when the red light is on.
[单项选择] When you first drift off into slumber, your eyes will roll about a bit, your temperature will drop slightly, your muscles will relax, and your breathing will become quite regular. Your brain waves slow down a bit, with the alpha rhythm predominating for the first few minutes. This is the first stage of sleep. For the next 30 minutes or so, you will drift down through Stage 2 and Stage 3. The lower your stage of sleep, the slower your brain waves will be. About 40-60 minutes after you lose consciousness, you will reach the last stage. Your brain waves will show the delta rhythm. You may think that you stay at this deep stage all the rest of the night, but that turns out not to be the case. About 80 minutes after you fall into slumber, your activity cycle will increase slightly. The delta rhythm will disappear, to be replaced by the activity pattern of brain waves. Your eyes will begin to dart around under your closed eyelids. This period of Rapid Eye Movements lasts for 8-15 minutes
A. about 80 minutes after you fall into slumber
B. some 10 minutes after your fall into REM sleep
C. about 40 minutes after you lose consciousness
D. some 30 minutes after your brain waves slow
