Sometimes we draw a quick conclusion(结论).But my little son gave me {#blank#}1{#/blank#} lesson.

    One day, I took my five-year-old son to go out for a walk after dinner. On the way, we saw an old woman selling fruit. I didn't take enough money with me {#blank#}2{#/blank#} I could buy only two pears.

    My son held the {#blank#}3{#/blank#} (pear) in his hands. I asked him if he could share one w{#blank#}4{#/blank#} me. On hearing this, he quickly bit one pear, and the {#blank#}5{#/blank#} I was surprised. I {#blank#}6{#/blank#}(ask) myself why my son was so greedy(贪婪). Perhaps my son was too young {#blank#}7{#/blank#}know about sharing and giving.

    Suddenly, {#blank#}8{#/blank#}(I) son gave me the pear in his right hand and said, "Mom, you have this one. This one is much {#blank#}9{#/blank#}(sweet)." Then I knew why my little son bit each pear.

    From then on, I always tell myself not to reach a conclusion too {#blank#}10{#/blank#}(quick).

    What will the car be {#blank#}1{#/blank#}in the future? Maybe we can sit in a car {#blank#}2{#/blank#}can drive itself.

    About 40 years ago, scientists from the United States started to develop self-driving cars（无人驾驶汽车）. The {#blank#}3{#/blank#}（famous） recent one was made {#blank#}4{#/blank#}Google in 2009.There are cameras and radars（雷达） on the top of the car. They allow the computer in the car {#blank#}5{#/blank#}（draw） a 3D map of the environment. Chinese scientists have also {#blank#}6{#/blank#}（success） developed a self-driving car. The car made a t trip from Changsha to Wuhan.

    Is a self-driving car {#blank#}7{#/blank#}（safety）? Yes, a recent study shows that robots make less dangerous drivers than {#blank#}8{#/blank#}（human）. If only 10%of cars on the street are self-driving, 1, 000 people will be saved every year. If 90%of vehicles（交通工具） are self-driving, they will save 21, 700 people a year. {#blank#}9{#/blank#}, a self-driving car is expensive and each costs about $100, 000.So {#blank#}10{#/blank#}is impossible to be very popular in the near future.

    A teacher has a great {#blank#}1{#/blank#}on students. A good teacher can help students achieve success. But do you know how to be a {#blank#}2{#/blank#}(help) teacher? Here are some tips:

    Help develop students' interests

    First, make the lessons interesting so that they are not {#blank#}3{#/blank#}(easy) forgotten. Second, offer students lots of {#blank#}4{#/blank#}(chance) to practice what they learn. Third, try to be kind and patient with students.

    Criticize(批评) less

    Some teachers criticize students for making {#blank#}5{#/blank#}(mistake). When students give  {#blank#}6{#/blank#}Answers to your questions, don't criticize them.  Sometimes, a little praise is more useful.

    Encourage more

    It{#blank#}7{#/blank#}(seem) that some students just can't learn a certain subject well. After a few {#blank#}8{#/blank#}(try), they want to give up the subject. When teachers notice that, they should look for all useful ways of {#blank#}9{#/blank#} (encourage) students. No matter what you do, always remember to cheer them up when they are in difficulties.

    If you put your {#blank#}10{#/blank#}into your teaching, you will be a successful teacher.