美国高中生捐赠手套送温暖。IT’S not just gloves that can help people keep warm in winter. Love can, too.A pair of 16-year-old American twins, Jack and Jake Moran, started a campaign called “Warm Hearts, Warm Hands ……

non-identical (异卵双生) twins. Identical twins share 100 percent of their genes. In the experiment, scientists put mosquitoes in a Y-shaped tube (管子). Then, they asked the identical twins to place ……

will change their fingerprints.So, if you meet twins, ask them to show their hands....Twins have the same looks, but not the same fingerprints. QIANTUTwins have the same looks ……

Key:1. twins 2. peacock 3. Australia 4. hospital ……

over obstacles placed on the ice. Then there was the chain. Eight skaters linked hands and skated... be thrown across the ice.Before central heating, people kept their homes warm with coal fires ……

Washing one’s hands should take at least 20 seconds. It’s best to use warm water. Here are some steps to follow:1. Wet (弄湿) your hands with running water. Then put enough soap over the hands. Wash ……

快乐洗手活动Look at the pictures. Japanese kids are learning how to wash their hands correctly. Workers from UNICEF (联合国儿童基金会) are teaching the kids. Did you know?1. Use warm water and soap.2. Washing our ……

双胞胎大聚会！双胞胎大聚会！  Why do people here all dress in pairs? They are all twins! In a town in Nigeria (尼日利亚), people celebrate the World Twins Festival every year.Why do people here all dress ……

for the difference?A: Snow needs to be just the right temperature to make a snowball ? warm enough for it to melt slightly under the pressure of the thrower's hands, but cold enough for it to reset once ……

Twins?TWO girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins.How can this be?Answer:The two babies are two of a set ……

冬暖夏凉的单车把手。THE comfort of the bicycle rider’s hands is important for a happy and safe journey. The X-ing grip (把手) helps with this. In winter, a “hot-wire” in the grip is solar charged (太阳能充电) to warm ……

LONDON — Mothers expecting twins of both sexes face a longer pregnancy than when male-only twins... of mixed-sex twins the female twin prolongs the pregnancy, resulting in heavier baby boys than when ……

Teacher: What is the plural (复数) of mouse?Pupil: Mice.Teacher: Good, now what's the plural of baby?Pupil: Twins! ……

eyes don’t change as you get older, or get dirty like hands or fingers. And even twins have different... their eyesC. twins with the same eyes make it impossible to have 100% accuracyD. not many people ……

全球双胞胎的盛会。It might be the world’s biggest party for twins (双胞胎). The 14th International Twins Day celebration took place in Yunnan on April 30. Nearly 1,000 pairs of twins got together ……