Electric rays are likely to be______.
A. near the North Pole
B. in warm waters
C. near the South Pole
D. both A and B
查看答案
The two tides in a given day______.
A. never vary in extent
B. may vary in extent
C. only vary in extent at the time of a new moon or a full moon
D. always vary in extent
Lateral thinking refers to the following EXCEPT______.
A. improving one's logic in thinking
B. improving one's perception in thinking
C. seeing the implications of what you are saying
D. exploring the alternatives for what you are saying
Usually you will not get a shock until you touch______.
A. a torpedo in one place
B. the water nearby it
C. its main nerve connected with fine nerves
D. a torpedo in two places
The smallest tides occur in______.
A. bays
B. open seas
C. inland seas
D. deeper seas
微信支付 
支付宝支付