The Hong Kong –Zhuhai–Macao Bridge, the world's {#blank#}1{#/blank#} (long) cross-sea bridge, enters the history of human engineering and connection as a point of pride upon {#blank#}2{#/blank#} (it) opening to traffic at 9 a. m. on Oct. 24, 2018.

    One day after the opening was announced at a ceremony {#blank#}3{#/blank#} (hold) in Zhuhai, the bridge's ports in three different administrative regions started serving travelers around the clock, opening 24 hours a day, seven days a week. {#blank#}4{#/blank#} (ensure) faster boundary crossings for passengers, the Macao and Zhuhai ports jointly use a one-off immigration model, {#blank#}5{#/blank#} allows travelers to queue up only once to finish both exit and entry procedures of the two cities in about thirty {#blank#}6{#/blank#} (second).

    Apart {#blank#}7{#/blank#} private cars, taxis and goods vehicles, two types of public transportation—shuttle bus and cross-boundary coach—can also run on the HZMB. {#blank#}8{#/blank#} frequency of shuttle buses is about 5-10 minutes during peak hours. Booking tickets for the shuttle bus online in advance {#blank#}9{#/blank#} (be) available since 9 am on Tuesday. With the bridge now in service, the travelling time between Zhuhai and Hong Kong International Airport will {#blank#}10{#/blank#} (shorten) from 4 hours to 45 minutes.

    Should naps(小睡) actually {#blank#}1{#/blank#} (take) during the day? Well, we certainly know from {#blank#}2{#/blank#} (evident) in the sleep center and that of many other scientists that naps can give you benefits for both your brain {#blank#}3{#/blank#} your body. But naps can actually be {#blank#}4{#/blank#} double-edged sword because while we're awake during the day, we're building up sleepiness or sleep pressure. So when you try to fall asleep at night, you'll fall asleep quickly and then you'll stay asleep. And when we sleep, we actually release that sleepiness so that we wake up the next morning feeling {#blank#}5{#/blank#} (refresh).

    So if you take a nap during the day, especially if you take it too late in the afternoon, you will actually release some of that sleepiness and it will make it much {#blank#}6{#/blank#} (hard) to fall asleep and stay asleep soundly throughout the night. So the advice would be if you don't struggle with your sleep and you can nap{#blank#}7{#/blank#} (regular), then naps are just fine.

    But if you do find it difficult {#blank#}8{#/blank#} (fall) asleep or stay asleep at night, then you should avoid naps and try to build up that healthy sleepiness in the evening.

    The ideal nap depends on {#blank#}9{#/blank#} you want from that nap. Different stages of sleep actually give you different types of brain and body  {#blank#}10{#/blank#} (benefit).