According to the passage, why do many fishes stay in group ？（）
A: It helps improve their safety.
B: It allows them to swim faster.
C: It helps them fight their predators.
D: It allows them to avoid twists and turns.
A: It helps improve their safety.
B: It allows them to swim faster.
C: It helps them fight their predators.
D: It allows them to avoid twists and turns.
举一反三
- Why is it important for scientists to build a good relationship with the media? A: It helps them to effectively popularize new scientific information. B: It enables the public to develop a positive attitude toward science. C: It helps them to establish a more positive public image. D: It enables them to apply their findings to public health.
- According to the passage, why do some many children hand out in the playground? A: They have to do some extracurricular activities outside. B: Their parents told them to play outside. C: Their are having physical education class. D: The school year ran out on them a few weeks ago.
- There are many reasons for this, among them the fact that simulation(仿真) allows the assessment of the potential(潜能) before a newly designed system is operable.
- Why light in color is important to large animals in deserts A: It helped them maintain a constant normal body temperature. B: It reflects rather than absorbs the sun-light. C: It helps them see their peers at night. D: It keeps them keep cool during the night.
- Developing children’s self-confidence helps bring them up to be ______.