15．A 7-magnitude（震级）earthquake hit Ya'an，Sichuan at 8：02on April 20，2013，and it killed at least 196people and injured more than 11，000．
Together with other students，Yang Xuelan ran out to the playground．She was safe．But all her textbooks and exercise books were buried（埋）in the teaching building．
What can we do when an earthquake happens？In fact，there's little we can do to stop natural disasters （自然灾害） such as earthquakes happening．But，some methods can reduce the harm they cause．
◆Drop down onto your hands and knees．This way can protect you from falling．
◆Cover your head under a strong table or desk．You can also stay along a wall，and cover your head with your arms and hands．
◆Hold on to（守住，抓牢） your shelter（遮蔽物） until the shaking stops．Be prepared to move with your shelter if the shaking continues．
Schools can normally take the earthquake drills（演练） to help student stay alive．
26．How many people lost their lives in the earthquake in Ya'an？A
A．At least 196．B．More than 11，000．
C．Less than 196．D．About 11，196．
27．When the earthquake happened in Ya'an，Yang Xuelan wasB．
A．at home B．at school
C．on her way to school D．playing on the playground
28．What does the underlined word"reduce"mean in Chinese？D
A．提高 B．阻止 C．增加 D．减少
29．According to the writer，we canCto reduce the harm natural disasters cause．
A．do nothing B．stay at home
C．take some methods D．run out of the house
30．Which of the following can help you stay alive in an earthquake？D
A．Dropping down onto your hands and knees．
B．Covering your head under a strong table or desk．
C．Holding on to your shelter until the shaking stops．
D．A，B and C．
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