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No family wants its home to catch fire, but it's good to plan for a fire just in case (以防万一). Talk with your family about 36 to do if a fire starts. 37 should have a plan for getting out of the house. Be sure to choose a safe place to 38 after everyone gets away from the fire. What should you do 39 there is a fire?  First, 40 people know about the fire. Yell (叫喊) the word 'fire'. Knock on the walls with your hands. Then 41 the door of your room. If the door is warm, don't open it. If it's cool, open it just enough to 42 . If you see fire or much smoke, close the door fast. If you can't see fire or smoke, you can go out of the door. Shut the 43 behind you. That will slow down the fire. Now find a 44 out. Stay away from the smoke. The air is the 45 near the floor. So it 46 be the safest to crawl(爬)when you leave the house. If you can't leave your room,  close your door. Cover the crack (缝隙) under the door 47 clothing. Then open the window or 48 the glass with a chair. Crawl out, of the window 49 .If the window is high off the ground, 50 jump! Wave a towel out of the window, and yell for help. When you get out of the house, run to the place where you and your family chose to meet. 小题1: A.how B.when C.what D.where 小题2: A.Everyone B.Someone C.Anyone D.No one 小题3: A.visit B.sleep C.stand D.meet 小题4: A.unless B.if C.because D.as 小题5: A.let B.teach C.want D.ask 小题6: A.look B.hear C.feel D.smell 小题7: A.put out B.find out C.look out D.take out 小题8: A.window B.door C.house D.room 小题9: A.way B.trip C.time D.plan 小题10: A.best B.worst C.thinnest D.least 小题11: A.should B.need C.may D.has to 小题12: A.by B.in C.of D.with 小题13: A.clean B.wash C.break D.make 小题14: A.happily B.loudly C.excitedly D.carefully 小题15: A.can't B.don't C.not D.no
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【单选题】Did you watch _______ 8 o’clock news this morning? _______ plane with 100 passengers got burnt at the airport.
A.
/; The
B.
the; A
C.
the; /
D.
/; A
【判断题】亚硝酸盐的测定, 样品经沉淀蛋白质、除去脂肪后,在弱酸条件下,亚硝酸盐与对氨基苯磺酸重氮化,再与 N-1-萘基乙二胺 偶合形成紫红色染料,其最大吸收波长为550nm,可测定吸光度并与标准比较,定量。
A.
正确
B.
错误
【单选题】分光光度法检测食品中亚硝酸盐时选择最大吸收波长是()。
A.
538nm
B.
570nm
C.
438nm
D.
以上不是
【单选题】生产者将雅芳( )新活再生霜、祛斑精华露、活肤水等放在同一包装物内出 售,这种包装策略是( B )
A.
类似包装策略
B.
配套包装策略
C.
等级包装策略
D.
附赠品包装策略
【单选题】亚硝酸盐重氮化偶合比色法的最大吸收波长为( )。
A.
530 nm
B.
540 nm
C.
550 nm
D.
560 nm
【单选题】Buses stop at every stop to let off and______the passengers.
A.
pick up
B.
get on
C.
let up
D.
take on
【简答题】A.They carried passengers, but not cargo. B.They were large, but surprisingly fast. C.They were the first successful steam-powered ships. D.They were more reliable than other ships of the 1860's.
【单选题】雅芳化妆品公司的产品线有化妆品、珠宝首饰和家庭用品三条,共有产品项目1300多个。那么雅芳公司产品组合的宽度是()。
A.
1300左右
B.
3
C.
2600左右
D.
433左右
【单选题】美国雅芳化妆是由雅芳小姐销售的。雅芳化妆品的这一销售方式是().
A.
直销
B.
直复营销
C.
传销
【单选题】采用格里斯试剂比色法测定亚硝酸盐含量时,其最大吸收波长为()nm。
A.
500
B.
524
C.
538
D.
612
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