高三英语改编模拟题阅读理解命题训练(3) (1).docx
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1、高中英语改编优秀模拟题原创阅读理解命题训练(3)You might be abusing your battery, especially if you have a habit of leaving the screen on, shutting down apps or throwing it in your bag on a particularly freezing morning. Smartphones are designed to keep apps open in the background. Forcibly closing them may satisfy that l
2、ittle part of your brain that wants to keep things neat and tidy, but because it takes more juice to start an app fresh than to wake it up, youre beating up on your battery every time you do it. Stop!Avoid letting the temperature of your battery powered device dip below 32 degrees Fahrenheit or rock
3、et above 95 degrees. In either case, damage can occur. It will lower-in some cases, dramaticallythe life of your battery.Petri Hayrynen, senior product marketing manager of Global Smart Devices at HMD Global, said that charging your phone to 100% may seem like a good idea, but if youre using a high
4、voltage (高电压的) charger, it can put a pressure on your battery. Instead, he said to pull the plug at 80%-90% for best usage and choose to charge often.“Old nickel (镍) batteries had a memory effect, which meant that if you didnt charge them from 1-100%, they started to forget their maximum capacity. B
5、ut it is quite different today. As for the modern-day lithium (锂) batteries, the most stress is to put on the battery when charging or discharging them fully; both reduce the charging cycles and overall battery life cycle,” Hayrynen said. He explained that people should do “more fast top-ups during
6、the day,” instead of charging smartphones overnight.Try to keep the battery above 30% or so, letting it discharge occasionally to calibrate the sensors. That will keep your battery healthier and longer. Besides, to get the absolute fastest charge, toggle on Airplane Mode after plugging it in.1. Why
7、is it not a good idea to shut down apps in the background?A. It makes the phone slower.B. It damages the battery.C. It reduces the storage space.D. It affects the phones memory.Answer: B. It damages the battery. Explanation: Forcibly closing apps in the background can damage the battery because it t
8、akes more power to start an app fresh than to wake it up.2. What is the ideal temperature range for a battery-powered device?A. Between 32F and 95F.B. Below 32F.C. Above 95F.D. Any temperature is fine.Answer: A. Between 32F and 95F. Explanation: The temperature of a battery-powered device should be
9、kept between 32F and 95F to prevent damage to the battery.3. What should you do when charging your phone to keep the battery healthy?A. Charge it to 100%.B. Use a high voltage charger.C. Charge it often but pull the plug at 80%-90%.D. Charge it overnight.Answer: C. Charge it often but pull the plug
10、at 80%-90%. Explanation: Charging your phone to 100% using a high voltage charger can put pressure on your battery. Pulling the plug at 80%-90% and charging often is better for the battery.4. What is the memory effect?A. The tendency of a battery to forget its maximum capacity.B. The memory capacity
11、 of a phone.C. The ability of a battery to remember charging cycles.D. The amount of space needed to store files on a phone.Answer: A. The tendency of a battery to forget its maximum capacity. Explanation: The memory effect refers to the tendency of old nickel batteries to forget their maximum capac
12、ity if they were not charged from 1-100%. 5. How should you charge modern lithium batteries?A. Charge them fully.B. Discharge them fully.C. Charge them often but not fully.D. Charge them overnight.Answer: C. Charge them often but not fully. Explanation: For modern lithium batteries, the most stress
13、is put on the battery when charging or discharging them fully. Charging them often but not fully is better for the battery.6. What is the benefit of keeping the battery above 30%?A. It calibrates the sensors.B. It saves storage space.C. It makes the phone faster.D. It extends the battery life.Answer
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