1．March 25 is the 17th Day of Education on the Safety of Elementary and Middle School Students．The theme of the day this year is to give students （46）C knowledge about safety and improve their ability（能力）to avoid risks．But （47）A to keep ourselves safe？Here are some tips．
When eating：Wash fruits carefully before you eat（48）B．Check the expiration date（保質(zhì)期）on the packages of your snacks and if your food looks or smells （49）D，don't eat it．
On your way home or school：（50）C the green traffic light，and look left and right for cars before you （51）A the road．Dress in bright colors，so the drivers can see you easily．Don't trust strangers in the street．
At school：when students （52）C you begin to push，stand still and try to hold onto something，or stay in a corner（53）Bthe crowd（人群）leaves．If you fall down in a moving crowd，cover your head with both （54）D．Lean（屈身）to one side，curl up（卷起）your body and bend your legs．
Where there is a fire：Stay calm，follow teachers'instructions，leave the classroom（55）A and use a piece of clothes to cover your mouth and nose so that you don't breathe in smoke．If your clothes catch fire，drop to the ground and roll from side to side to put out the fire．
| 46．A．less | B．many | C．more | D．most |
| 47．A．how | B．what | C．why | D．when |
| 48．A．they | B．them | C．it | D．their |
| 49．A．good | B．well | C．nice | D．bad |
| 50．A．Look for | B．Look out | C．Wait for | D．Look at |
| 51．A．cross | B．go | C．walk | D．a(chǎn)cross |
| 52．A．under | B．between | C．a(chǎn)round | D．next |
| 53．A．a(chǎn)fter | B．until | C．though | D．so |
| 54．A．hand | B．legs | C．feet | D．hands |
| 55．A．quickly | B．slowly | C．quick | D．slow |
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