1 . 根据短文内容，从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
If you are in a crowd, the first and most important thing is to make yourself familiar with your surroundings and mentally notice alternate exits.    1    Make yourself aware of the type of ground you are standing on, and know that in a crowd of moving people wet or uneven ground can be slippery or hazardous, causing you to fall.    2    When in danger, a few seconds can make all the difference, giving you the possibility of taking advantage of escaping route. Always stay closer to the escape route.If you find yourself in the middle of a moving crowd, do not fight against the pressure, do not stand still or sit down, because you could easily get trampled.    3    Take advantage of any space that may open up to move sideways to the crowd movement where the flow is weaker.Keep your hands up by your chest, like a boxer—it gives you movement and protects your chest.    4    If you cannot get up because you are injured, get someone to pull you back up. If you have kids, lift them up.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 into fetal position.    5    

A．Be aware of the general atmosphere of the event, as panic situations can often be expected.

B．There is always space between people.

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

D．The worst is to be pushed by the crowd against an immovable object

E．If you fall, get up quickly.

F．No matter where you are, make sure you always know how to get out.

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