__4__It gives you movement and protects your chest.

　　If you fall, get up quickly. If you fall and cannot get up, keep moving by crawling in the same direction of the crowd, or if that is not possible, then cover your head with your arms and curl up (蜷缩)．__5__ Sometimes, finding a right posture can save your life.

　　A．Make yourself aware of the type of ground you are standing on.

　　B．Do not lie on your stomach or back, as this dangerously exposes your lungs.

　　C．If you are stepped on, you should shout for help.

　　D．Instead, move in the same direction of the crowd.

　　E．Keep your hands up by your chest, like a boxer.

　　F．Stretch your arms to the full length so that you can make more space to move in the crowd.

　　G．What's worse is that the stampede can be caused while there seems no actual danger.

　　答案：1～5　GADEB

　　Module 4　Great Scientists

　　[写得准] [用得活] [积得多]

　　1.publish vt.　出版

　　2.breakthrough n.

　　突破

　　3.support vt.

　　支持

　　4.convert vt.

　　改变；转换

　　5.replace vt.

　　取代；以……代替

　　6.victim n.

　　受害者

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