Which of the following factors does not affect the extent of the tides?
A.The composition of the shore soil.
B.The moon.
C.Time.
D.Place.
相关问题推荐
-
The electric plates on the electric eel______.
A.run along the length of its body
B.are found on sides of its head
C.are located in its head
D.are in its tail -
听第10段材料,回答第17 -20题。
What is the purpose of the meeting?[A]To determine who will graduate this year. [B] To discuss the seating arrangement. [ C] To begin planning the graduation ceremony.
-
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 -
Who should sign up?
[A] Only students who have time for the work.
[ B] All the students who are at the meeting.
[ C] Only students who have a telephone. -
The purpose of the shock produced by electric fish is to______.
A.protect themselves from being attacked
B.light up nearby waters
C.attack other fish or marine animals
D.both A and C