According to the passage, the shape of sea cucumbers is important because
A. it helps them to digest their food.
B. it helps them to protect themselves from danger.
C. it makes it easier for them to move through the mud,
D. it makes them attractive to fish.
查看答案
If human being want to enjoy the long-lasting peace and happiness, they must avoid falling
A. coincidence
B. harmony
C. uniform
D. alliance
Which of the following exerts the greatest influence on universal literary？
A. Government policies.
B. The invention of the printing press.
C. The popularization of education.
D. The practical need for reading.
Of all the features of the sea cucumber, which of the following seems to fascinate the author most？
A. What it does when threatened.
B. Where it lives.
C. How it hides from predators.
D. What it eats.
Regan obviously believes that the prospect of animal rights movement is
A. gloomy.
B. bright.
C. uncertain.
D. doomed.
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