(指南)· “Do not open door while the plane is flying, except in emergency” — on emergency exit (紧急...IF you are warned that sleeping pills (安眠药) may cause drowsiness (睡意), what’s your reaction ……

on breathing so they don’t drown. Migrating (迁徙的) birds can sleep while flying during long journeys... refreshed. But have you ever wondered what sleep is like for animals?In fact, from sleeping standing ……

(信天翁) are large seabirds. They can sleep while flying. They can even do so while flying at a speed... while they sleep. Swiss scientists did a study on 250 different mammals (哺乳动物). They found ……

听，是什么声音？听，是什么声音？  Flying squirrels like sleeping during the day. These three squirrels... accidentally.Flying squirrels like sleeping during the day. These three squirrels are from Japan ……

信不信由你An albatross (信天翁) can sleep while flying. ……

alert for 24 hours a day all their lives.BirdsBirdsSome birds also fly while sleeping with half... them from falling into the water, they sleep for 10 seconds at a time while flying. Some birds ……

” – from a Dutch bicycle manual (指南)·“Do not open door while the plane is flying, except in emergency...IF you are warned that sleeping pills (安眠药) may cause drowsiness (睡意), what’s your reaction ……

According to new scientific research, alarm clocks may give outradiation(辐射) that is bad for your health. They should be kept at least a metre from your head while sleeping. ……

While some companies are focusing on developing self-driving cars, others are looking to produce flying vehicles that provide transportation by both road and air. And it seems that members ……

While some companies are focusing on developing self-driving cars, others are looking to produce flying vehicles that provide transportation by both road and air. And it seems that members ……

. What does Tom look like?5. Can I please use your pencil for a while? II. What is the best spring activity to free your eyes from reading and writing? Flying kites! On a sunny day with a good wind ……

能控制梦境的神奇眼罩WANT to control your dreams? This sleeping mask (面具), called Remee, can help you.... Now, users can dream about anything they like, such as flying in the sky or meeting ……

) Earth in 46 days! They sometimes even sleep while flying.The albatross (信天翁) is one of the largest... 800 km in a day and circle (绕行) Earth in 46 days! They sometimes even sleep while flying. ……

so much that he could even sleep in a storm.B. He was never worried about anything while sleeping.C. He had some difficulties in hearing while sleeping.D. He was prepared for the storm so he ……

Less flying... more walking. ……