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17 Making a Medical Diagnosis GLOSSARY battery a series of things; a group of many similar things * Applicants have to pass a battery of tests before they are admitted to thisspecial school. to zero in on to identify one object or explanation among m
12Buying a Digital Audio (MP3) Player GLOSSARY MP3 player a device that plays digital music in MP3 files* This is a very popular MP3 player, but there are many other players that areless expensive. selection the variety of things to choose from at a
Unit 8 Part B A Terrible Disease The phone rang and it was my husband Jack asking me to take some lunch to his office. As I drove off, I noticed a new shopping center. Strange I hadn't noticed it before. Near his office I also saw a fire station I di
This Scientific American 60 Second Science, I'm Sophie Bushwick, got a minute.Developed countries spend about 3 percent of all their electrical power treating waste water, the juice purified contaminated material so it can be returned safely to the e
Smartphones' battery down to 10 percent. Time to turn down the brightness on the screen. Right? It's a classic strategy to squeeze more juice from the battery and it works. But that trick might be less effective than you think, cause it turns out nea
Engineers Build Bendy Batteries for Wearables可穿戴设备和可拉伸电池更配哦 The flat lithium ion batteries that power smartwatches are built by stacking the battery components: positive and negative electrodes, current collectors and a se
A: Hello, this is Betty. B: Hi, Betty. Larry here. How many smoke detectors are in your apartment? A: Actually, I have two. B: Are the batteries fresh? A: Both batteries are good. B: Great. I need to come by and check them myself. A: No problem, when
Benjamin: A microwave oven? Shirley: Yes, it's really two-pence colored. Benjamin: Okay, honey, we already have two. There is no more space for a third one! Shirley: But it's so elegant. Benjamin: Honey, maybe something else, just no more microwave o
Apple has said that its latest computer operating system, Mavericks, is available free of charge. The California-based company made the announcement Tuesday at an event in San Francisco. 苹果公司表示,其最新款的电脑操作系统Maveri
American Brothers Make a Difference in Ghana A street vendor in Ghana lights a kerosene lamp in order to stay open a few more hours. A child in rural Kenya studies by a kerosene lamp at home. In Africa, 600 million people live without electricity. So
The drive to develop a battery to power automobiles, without using petroleum, is also behind the effort to develop an electric powered airplane. New designs for electric aircraft were recently unveiled at the Experimental Aircraft Association's (EAA)
This is Scientists American sixty seconds. I am Santy Graver. Got a minute? They are called button cells, coin cells or watch batteries. By any names, this tiny round batteries pose a choking danger to kids. And if a kid succeeds in swallowing a butt
Beginners. This morning was an ordinary morning. I woke the kids up. Wakey, wakey, I said gently to them, as usual. I brought the two youngest their breakfast drink that they like to drink in bed. They are spoilt, I know. The oldest two get themselve
By Deepak Dobhal Washington 07 November 2007 Scientists in the United States have developed a new kind of battery that looks and feels just like a piece of paper. VOA's Deepak Dobhal reports its inventors say the battery's power and flexibility make
NHTSA Opens Probe into Chevrolet Volt Fire Federal safety officials are looking into battery-related fires in General Motors' new electric-powered Chevrolet Volt automobile. The fires occurred after the officials crash-tested the vehicle. One of the
Charles: I dont know how long this power outage is going to last. Do you think we should call Elizabeth to tell her well be late for dinner? Jane: Thats a good idea. Do you know her phone number offhand? Charles: No, I dont, and I cant look it up in
Boeing says commercial flights of its grounded 787 jets could resume within weeks following a battery fire on a Dreamliner parked in Boston and a malfunctioning battery that led to an emergency landing of another 787 in Japan. Boeing executives say t
图片1 Beginners. Doreen is a neighbor of mine. She also happens to be a good friend. She lives just three houses away. We joke that my children have adopted her as another grandma. My two youngest children go and visit her all the time, and she mak
This tiny sensor mounted on a bumblebee is monitoring all kinds of important environmental data. This is the brainchild of a group of researchers at the University of Washington. What made us start the aim of this was our prior work on building insec