Skin is not only large, but it is important. One of its jobs is to protect us, {#blank#}1{#/blank#} keeps bad things out. But sometimes it fails. {#blank#}2{#/blank#} (extreme) small bugs, called mites, can get under our skin. And when they do, they cause itching and great discomfort. So, to get under someone's skin means to annoy them or to bug them. That's just one definition of the {#blank#}3{#/blank#} (express) "to get under someone's skin." It can also mean that someone is very {#blank#}4{#/blank#} (attract) to you. You can't stop thinking about them. You might even be obsessing （着迷）about them.

    There are many ways {#blank#}5{#/blank#} (describe) people using the word "skin." If someone is thick-skinned they are not easily hurt emotionally. You can criticize them or be unkind to them and it simply rolls off their back. Thin-skinned people, {#blank#}6{#/blank#}, are easily hurt by criticism, even if it is not too severe. You have to be careful about {#blank#}7{#/blank#} you say to thin-skinned people so as not to hurt their feelings.

    If someone is suddenly very {#blank#}8{#/blank#} (scare), you can say they nearly jumped out of their skin! For example, one day I saw my friend Sierra {#blank#}9{#/blank#} (wait) at a bus stop. She was wearing headphones and did not hear me come up behind her. So, when I {#blank#}10{#/blank#} (touch) her shoulder, she nearly jumped out of her skin!

    When I was young, I was not popular {#blank#}1{#/blank#} my classmates. If you'd asked me, I would have told you I was against bullying(霸凌).

    But one day, I was in the classroom, {#blank#}2{#/blank#}(chat) with my friend Lizzie, when Kristina walked up to me. She was one of the bullies so I prepared {#blank#}3{#/blank#}(me) for more insults(羞辱). I looked at her, feeling {#blank#}4{#/blank#}(terrify). But she said that she was sorry for what she {#blank#}5{#/blank#}(do) to me.

    I accepted her apology. Later, we became friends, laughing at people, {#blank#}6{#/blank#} even pushing them. People were noticing me in {#blank#}7{#/blank#} way they never had before.

    Then one day, Lizzie came up to me and shouted, "you've become a bully!" That night I was {#blank#}8{#/blank#}(wake) thinking for a long time. The next day at school, I apologized to Lizzie and told her I would never hurt her  {#blank#}9{#/blank#}(feel) like that again.

    {#blank#}10{#/blank#} took a while to earn back her trust, but eventually we got back to normal.

    Sudan is the only male northern white rhino (犀牛) left in the world. That {#blank#}1{#/blank#} (mean) Sudan, 42, is the last hope for avoiding extinction. {#blank#}2{#/blank#}(protect) him, officials have placed him under 24-hour armed guard at the OI Pejeta Conservancy in central Kenya. Sudan lives there {#blank#}3{#/blank#} two female northern white rhinos, Fatu and Najin.

    Northern white rhinos, {#blank#}4{#/blank#} can weigh up to 5,000 pounds, were once plentiful across northern and central Africa. {#blank#}5{#/blank#} (hunter) have killed thousands of rhinos because of {#blank#}6{#/blank#} high demand for the animals，horns (角). Rhino horns, believed to have medical effects, are used in {#blank#}7{#/blank#} (tradition) Asian medicines. More than 1,000 rhinos {#blank#}8{#/blank#} (kill) in 2014 in South Africa alone and fifty-four rhinos in Kenya, which has a much {#blank#}9{#/blank#} (small) population.

    Sudan, Fatu, and Najin have had their horns {#blank#}10{#/blank#} (remove) so that they will not be hunted. People hope Sudan and one of the females will be able to have a baby. Sudan is very old, but scientists will not give up hope.