When the construction of the new factory came to the end, a pump was put in. Then, all the settlers {#blank#}1{#/blank#} (defeat) by a severe disease whose characteristic was similar to cholera. An expert physician {#blank#}2{#/blank#}was instructed to attend to the victims and handle this case showed great enthusiasm, but he didn't foresee that it was {#blank#}3{#/blank#} hard challenge. After simple enquiry, he announced that the {#blank#}4{#/blank#} (pollute) water was to blame. But without positive {#blank#}5{#/blank#}(evident), people suspected and rejected his view, saying the theory he put forward made no{#blank#}6{#/blank#}(sensible). Being much {#blank#}7{#/blank#}(strict) with himself than before, he contributed himself to the case. Apart from {#blank#}8{#/blank#} (make) enquiries, he made detailed charts and analyzed the data carefully. Finally, he drew some scientific {#blank#}9{#/blank#} (conclude), {#blank#}10{#/blank#} (link) the disease to the radium in the pump. He found out why people there got sick immediately.

    The Moon's near side, the one we all see, has been the target of many robotic and human missions. However, its far side, also {#blank#}1{#/blank#} (call)the dark side because it faces away from the Earth and little {#blank#}2{#/blank#} (know)about it, has never been explored. That changed on Jan.2, 2019, when Chinese spacecraft Chang'e 4 made a soft landing on {#blank#}3{#/blank#} is often referred to as the dark side.

    The landing is {#blank#}4{#/blank#} example of China's growing desire {#blank#}5{#/blank#} (compete)with the American, Russian and European space programs. China also wants to {#blank#}6{#/blank#} (strength)its position as a regional and international power.

    One of the great {#blank#}7{#/blank#} (difficulty)in exploring the far side of the Moon is that it blocks all radio signals, {#blank#}8{#/blank#} (make)it impossible to communicate with the Earth. To overcome this difficulty, in 2017, the Chinese National Space Administration launched a satellite to orbit the Moon and relay the signals. Once a {#blank#}9{#/blank#} (rely)communication path was in place, Chang'e 4 could send back information.

    Chang'e 4 will make astronomical observations and examine the structure and mineral composition of the ground above and below the surface, {#blank#}10{#/blank#} researchers believe will provide insights into the solar system's early days and perhaps even the origin of the first stars.

    How are you getting along with your high school? It may be hard for you as this is the first time that you {#blank#}1{#/blank#}(leave) your parents. I know that you are now having trouble{#blank#}2{#/blank#}(communicate) with others. That's{#blank#}3{#/blank#}you are new here and people don't know about you. But I think you can follow the advice below.

    First, you should take{#blank#}4{#/blank#}active part in the discussions and show your own opinions about the matters, and at the same time, learn to listen to other people's views{#blank#}5{#/blank#}(careful). Second, you should learn about your classmates' likes and dislikes,{#blank#}6{#/blank#}can make you get familiar with them. Only in this way can you get to know more{#blank#}7{#/blank#}(difference) people and show them that you are just as friendly. I'm always here ready to help. We can take part in some{#blank#}8{#/blank#}(activity) together and I can introduce you to others.

    There's no need{#blank#}9{#/blank#}(worry) too much. People will know you more very soon and will like to make friends{#blank#}10{#/blank#}you if you can do as the above.

    With the rapid development of the Internet, more and more teenagers make friends online nowadays. Some people say it's good to do that, while others think it's {#blank#}1{#/blank#}(harm) especially to school pupils.

    Some consider that making friends online is a modern way to share friendship {#blank#}2{#/blank#} others. They can express their thoughts {#blank#}3{#/blank#}(free) to improve social skills and fluency in English. On the contrary, some strongly believe it is {#blank#}4{#/blank#} waste of time to make friends through online communication and what's worse, those so-called "friends" are likely to cheat you after {#blank#}5{#/blank#}(gain) your trust.

    In my opinion, {#blank#}6{#/blank#}the Internet is good or not depends on how we use it. If it {#blank#}7{#/blank#}(use) properly, we can communicate with people {#blank#}8{#/blank#} come from every corner of the world, and share life experiences. Of course, however, since the Internet was born, many bad men {#blank#}9{#/blank#} (make) use of it to do something bad. So we must learn to determine true or false and avoid being hurt.

    In conclusion, every coin has two {#blank#}10{#/blank#} (side). So does the Internet. If used in a proper way, the Internet has more advantages in seeking friendship.

    All our teachers try to make classes lively and {#blank#}1{#/blank#}(interest), so that we won't get {#blank#}2{#/blank#}(bore). The class of my English teacher is organized well although some students often say they hate this subject. I know I can't avoid {#blank#}3{#/blank#}(lose) my confidence unless I work hard. I also know I must make sure of enough time and energy {#blank#}4{#/blank#}(learn) English. I once {#blank#}5{#/blank#}(admit) to my parents that I had trouble with my English learning and they encouraged me greatly. The teacher is always strict {#blank#}6{#/blank#} me. With my teacher {#blank#}7{#/blank#}(help) me, I have made great progress in English. Last week, I didn't get nervous in the English examination or answer incorrectly, {#blank#}8{#/blank#} meant that I succeeded. My teacher thinks I am shy {#blank#}9{#/blank#} much more intelligent than other students! In my opinion, my English teacher is patient, energetic and serious in his English literature class, and he leaves me such a deep and good {#blank#}10{#/blank#}(impress). I will show respect for him forever.