阅读理解。
阅读下面短文，并根据短文后面的要求答题。
Experts are finding your standard first aid response may be the worst thing you can do in an emergency.
Here's how to update your first aid kit.
CUTS AND SCRAPES
When the skin isn't broken, it's hard to beat iodine (碘酒) for killing bacteria(细菌). 3. _____________
doctors use it to clean before surgery. But when there's a cut, full - strength iodine and rubbing alcohol can
be harmful to skin cells, preventing healing. Putting iodine on cuts and wounds kills bacteria, but it won't clean
the wound. The most effective way is washing the wound with water.
BURNS
If you spread some butter on the burn to ease the pain, it isn't a good idea. Butter was thought to cool the
burn, but it can cause infection and create and environment for bacterial growth. Run the burn under cool
water immediately to help remove the heat and put an end to the damaging process. Wrap the burn with a
bandage, and keep it clean and dry. If blisters (水泡) form, don't break them.
POISONING
When a child swallows anything poisonous, parents probably think they're well prepared if ipecac (催吐
剂) is on hand. Wrong. Ipecac was thought to be a good way to treat a child who had swallowed a poisonous
substance, but not any more because it doesn't always remove the toxic substance (有毒物质). That may
cause dehydration (脱水) and prevent doctors from giving other treatments.
EXCESS BLEEDING
Everyone learns how to stop bleeding with a tourniquet (止血带). But studies show this method causes
more harm than good. Tourniquets can increase the risk of tissue damage or even the loss of a limb. Apply
direct pressure to the wound. Simply place a clean cloth on the wound and press firmly; don't remove the
cloth, event if it gets black. If necessary, add more cloths. If that's not enough, you can further slow the
blood flow by applying pressure to the main artery (动脉) of the upper arm or leg.
1. What is the best title of the passage? (Please answer within 6 words.)
________________________________________________________________________________
2. Which sentence in the passage can be replaced by the following one? However,
by studying we know this method does more harm instead of doing more good.
________________________________________________________________________________
3. Please fill in the blank with proper words or phrases to complete the sentence.
(Please answer within 5 words.)
_________________________________________________________________________________
4. Translate the underlined sentence in the passage into Chinese.
__________________________________________________________________________________
与
放在与水平面成
角的斜面上，
段是直导线，
段是弧形导线，
段是直导线，
、
间接入一个阻值
的电阻，一根质量为
且不计电阻的金属棒
能在
的匀强磁场中，磁场方向垂直于斜面向上当金属棒处于位置
时，金属棒具有沿斜面向上的初速度
，同时给金属棒施加一沿斜面向上的外力
，此时，金属棒沿斜面向上做匀减速直线运动；当金属棒到达位置（II）后，外力方向不变，大小突变为
，金属棒将沿斜面向上做匀速直线运动，再经过时间
到达位置（Ⅲ）。金属棒在位置（I）时，与
、
两点，
。金属棒在位置（Ⅱ）时，与
、
两点。已知位置（I）、（Ⅱ）间距为
，
求：
上产生的热量
？
，在位置（I）时，
间的感应电动势为
，感应电流为
，受到的安培力为
，
，由运动学规律得：