下列有关止血措施的叙述，正确的是：
A. 指压止血法是一种迅速有效、可持续的止血方法
B. 头顶出血时，可指压伤侧耳前、下颌关节下方止血
C. 使用止血带止血时，应尽量缩短使用止血带的时间，通常可允许1小时左右
D. 头颈部出血时，单侧按压效果不佳，可加按对侧颈总动脉
4. In some countries, bungee jumping is banned mainly because ______..
A. it costs too much money
B. it makes people too thrilled
C. it makes people try out love
D. it might make people lose lives
3. Where did Bungee jumping start as a sport in the 1970s?
A. In America.
B. In Australia.
C. In New Zealand.
D. In Canada.
According to the paragraph 9, why is it important for children to be close to nature?
A. This can help know the importance of protecting the environment.
B. This can help them to be more independent.
C. This can arouse their great interest in nature.
D. This can motivate them to study hard in school.
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