. Around 2020.    D. Around 2021.Days on Earth get shorter (P6)Choose the answer:1. When...?____________________________________________________________________________DAY 3DAY 3Days on Earth get shorter (P6)Choose the answer:1 ……

to Earth than it is now. As a result, the days then were shorter than they are now. However... Earth rotates.  TUCHONGHaving a much shorter dayHaving a much shorter day史前时期每天只有19个小时史前时期每天只有19个小 ……

to lift heavy things.The days can get shorter.Countries around the equator (赤道) will go underwater... feel easier to lift heavy things.The days can get shorter.The days can get shorter.Countries around ……

)) get shorter, and are not as good at protecting our DNA. But during Scott’s stay in space, his...双胞胎). They are both retired NASA (美国宇航局) astronauts. From 2015 to 2016, Scott spent 340 days at the International ……

你冻得不敢出门的时候，地球的另一端也在经历严冬吗？ COLD air. Snow. Shorter days. We are in winter now.Winter is the coldest... this year. It meant the days grew longer and the nights shorter.The shortest day THE shortest day ……

) (white cells (细胞) found at the end of the DNA helix (螺旋)) get shorter, and become less effective (有效... while Mark’s kept getting shorter.Scientists also found that after Scott came back to Earth ……

Days are shorter after Chile quakeTHE February 27 Chile earthquake was so powerful that it may have shortened the length of a day, NASA announced on March 1.The energy of the quake has sped up Earth ……

was 1.46 milliseconds (毫秒) shorter than 24 hours. The year 2020 had 28 of Earth’s shortest days...) shorter than 24 hours. The year 2020 had 28 of Earth’s shortest days since 1960. This year ……

get tired at night, so they work and study for a shorter time. Norway has some of the shortest... working hoursPeople easily get tired at night, so they work and study for a shorter time. Norway has ……

.This is because they end up having shorter telomeres (染色体端粒). As animals get older, their telomeres naturally shorten. As the telomeres get shorter, the animals start to show more signs of aging. Therefore ……

. The strong pressure (压力) may make him get shorter. But his bones and muscles may be stronger.  ... make him get shorter. But his bones and muscles may be stronger.   ……

year in decades. QIANTUA year is 365 days long, the time it takes for the Earth to revolve (旋转...), quicker than it has done in decades, and the days are therefore shorter. But they are only ……

was treated as a hero. However, when he got back to Earth, he wasn’t allowed to return home to his family immediately. He and his crewmates were quarantined (隔离) for 21 days out of concern ……

人老了为什么会变矮？人老了为什么会变矮？People can become 2.5 to 7.6 cm shorter when they get old. This is mostly... a crooked back (驼背). People can become 2.5 to 7.6 cm shorter when they get old. This is mostly ……

working shorter days”....LONG days of work and study often exhaust people. To make workdays less stressful, one Swedish city ……