—Yes, she doesn't even have enough {#blank#}1{#/blank#} to walk upstairs.

    Everyone needs to know how to prevent a fire. It is also important to know what to do when it {#blank#}1{#/blank#}（break）out .

    Every year, over 11, 000 people {#blank#}2{#/blank#}（kill）or injured in house fires. These fires could have been avoided. Smokers who are {#blank#}3{#/blank#}（care）cause about 200 deaths and over 6,000 fires. More than half of those {#blank#}4{#/blank#} die in fires are poisoned or harmed by smoke.

    If fire happens, do not attempt to fight the fire unless it is small. Try putting out a small fire with water. If {#blank#}5{#/blank#} fire has spread or if the flames are more than 20 inches high, shut the door on it. Warn everyone else in the building and tell them to get out. You should leave and dial 119for the fire department.

    Before {#blank#}6{#/blank#}（go）into a room, check the door. If the handle or the door is hot, do not open it! Instead, put clothing or a wet towel at the bottom of it to keep smoke out. If the door is not hot, open it {#blank#}7{#/blank#}（slow）. If there's a rush of smoke or heat, close it again and shout to warn {#blank#}8{#/blank#}（other）in side.

    Now open the window and shout “Fire!”. See whether you can drop safely to the ground. Use this {#blank#}9{#/blank#} your escape course if you can. If you are not on ground level, break your fall by pushing a mat out first. Lower yourself at arm's {#blank#}10{#/blank#}（long）before dropping. Once outside, stay outside and make sure the fire department is called.

    The Great Wall {#blank#}1{#/blank#}(think) highly of by the human race as one of the Seven Wonders of the Ancient World. It lies in North China, with over 6,000 kilometers in {#blank#}2{#/blank#}(long) and 7—8 meters in height. {#blank#}3{#/blank#}(build) mainly with earth, brick and stone, the Great Wall was designed {#blank#}4{#/blank#}(protect) people in ancient China from invaders. However, it is now {#blank#}5{#/blank#}(universal) regarded as one of the most important tourist spots in our country. Every year, it is visited by thousands of people from all over the world. The Great Wall has become a symbol of {#blank#}6{#/blank#} Chinese nation and its culture.

    The Great Wall is wide enough for five horses or ten men to walk side {#blank#}7{#/blank#} side. Along the wall are watch towers, where soldiers used to watch.

    It was very difficult to build such a wall in ancient times without any modern {#blank#}8{#/blank#}(machine). The condition was {#blank#}9{#/blank#} terrible that all the work was done by hand. To be honest, the Great Wall was made not only of stone {#blank#}10{#/blank#} earth, but of the flesh and blood of millions of men.

    The sun at the center of our Solar System is one of the big reasons for{#blank#}1{#/blank#}we're here today, but it can also be a big trouble from time to time. Coronal mass ejections(CMEs) (日冕物质喷发)can seriously damage human{#blank#}2{#/blank#}(communicate) systems.

    For years, researchers{#blank#}3{#/blank#}(attempt) to forecast and predict CMEs in {#blank#}4{#/blank#}hope that warnings could help prevent damage to electronics and the power grid (电网). As it turns{#blank#}5{#/blank#}that a CME is more like a sneeze. Professor Mathew Owens of the University of Reading explains, "The research team and I have found they are more like an{#blank#}6{#/blank#}(expand) dust cloud or sneeze."

    When the solar wind acts on the CME as it moves through space, it causes the shape and behavior of the energy explosion {#blank#}7{#/blank#}(become) unpredictable. "Therefore if we want to protect{#blank#}8{#/blank#} (we) from solar eruptions, we need to understand more about the solar wind, "Owens says.

    The research team suggests that solar wind readings should {#blank#}9{#/blank#} (include) in the forecasting and prediction of future CMEs. This study could help scientists more{#blank#}10{#/blank#}(accurate) assess the risk that the ejections bring to human technology and potentially help reduce the damage they cause.

    Tons of waste is being left on Mount Qomolangma by a{#blank#}1{#/blank#}(grow) number of visitors, which bothers many people. A team will deal with the task{#blank#}2{#/blank#}the climbing season ends this May, by which time there will be fewer visitors. Garbage{#blank#}3{#/blank#}(collect) on Qomolangma requires two to three years of training, according to Cering Dandar, a mountaineer and guide.

    China successfully landed the Chang'e 4 lunar probe(月球探测器)on the far side of the moon on January 3,2019, becoming the only country in history{#blank#}1{#/blank#}(touch) the lunar surface unseen by those on Earth. The far side of the moon has been seen and mapped{#blank#}2{#/blank#}(previous) by astronauts of the Apollo missions. But it is the first time that the moon's far side{#blank#}3{#/blank#}(set) foot on by any spacecraft, and the successful landing of Chang'e 4 is seen as a major milestone in space {#blank#}4{#/blank#}(explore).

    The Chang'e 4 spacecraft consists{#blank#}5{#/blank#}two parts:a lander and a rover(巡视器). Representing China's{#blank#}6{#/blank#}(new) step in the lunar probe project of all time, it landed at 10:26 am Beijing time. Then it sent back a photo of the landing place.{#blank#}7{#/blank#}(shoot) through cameras on the probe's lander, the photo marks the world's first image taken on the surface of the far side of the moon. One of the photos published by the China National Space Administration shows the place{#blank#}8{#/blank#}Chang'e 4's rover-named Yutu 2~will be heading hours later for{#blank#}9{#/blank#}purpose of conducting further research. The name Chang'e has its roots in the Chinese goddess of the moon. In the ancient tale, Chang'e{#blank#}10{#/blank#}(fly) to the heavens and landed on the moon as her final resting place.