Are you facing a situation that looks impossible to fix?

    In 1969, the pollution was terrible along the Cuyahoga River Cleveland, Ohio. It {#blank#}1{#/blank#} (be) unimaginable that it could ever be cleaned up. The river was so polluted that it {#blank#}2{#/blank#} (actual) caught fire and burned. Now, years later, this river is one of {#blank#}3{#/blank#} most outstanding examples of environmental cleanup.

    But the river wasn't changed in a few days {#blank#}4{#/blank#} even a few months. It took years of work {#blank#}5{#/blank#} (reduce) the industrial pollution and clean the water. Finally, that hard work paid off and now the water in the river is {#blank#}6{#/blank#} (clean) than ever.

    Maybe you are facing an impossible situation. Maybe you leave a habit {#blank#}7{#/blank#} is driving your family crazy. Possibly you drink too much or don't know how to control your credit card use. When you face such an impossible situation, don't you want a quick fix and something to change immediately?

    While there are {#blank#}8{#/blank#} (amaze) stories of instant transformation, for most of us the {#blank#}9{#/blank#} (change) are gradual and require a lot of effort and work, like cleaning up a polluted river. Just be {#blank#}10{#/blank#} (patience)

    My most {#blank#}1{#/blank#} (embarrass) moment occurred last month. I was invited to attend {#blank#}2{#/blank#} interview for a job as a hotel receptionist. I arrived on time and was shown into the manager's office by m an {#blank#}3{#/blank#} (assist). I was {#blank#}4{#/blank#} nervous that I didn't catch the manager's name.

    The interview began, “Do you have any previous experience in hotels?” asked the manager. “No sir,” I said. The manager frowned (皱眉). “Are you good {#blank#}5{#/blank#} using computers?” “Yes, Sir, I am {#blank#}6{#/blank#} (family) with most popular kinds of software. The manager frowned again. He didn't look a friendly person- The interview continued. Every answer I gave {#blank#}7{#/blank#} (receive) by a frown from the manager, even though I told him about my communication skills, my knowledge of French and so on.{#blank#}8{#/blank#} (obvious), I was doing very badly. At last, the interview came to a close. “One final question,” said the manager. “How good is your eyesight?” “Excellent, sir,'' I replied. “Very well,'' said the manager, “Thank you for coming.” I stood up {#blank#}9{#/blank#} (shake) hands with him. When the manager stood up as well, I realized {#blank#}10{#/blank#} I had been doing wrong. The gentleman I had been calling “sir” during the whole interview was wearing a skirt! The manager was a woman! I didn't get the job.

    Traditional Chinese culture places much emphasis (重视) on food. Considered to be an important part of each day, {#blank#}1{#/blank#}(eat) is far beyond simply meeting a need. However, people are living in fast-paced society now, so they hardly have time to enjoy their food. They need fast food. That is {#blank#}2{#/blank#} China's fast-food market expands.

    A foreign fast-food restaurant {#blank#}3{#/blank#}(call) KFC arrived in China first, quickly followed by {#blank#}4{#/blank#}（other ）such as Pizza Hut and McDonald's. With{#blank#}5{#/blank#}the (develop) of China, foreign fast-food chains are realizing high-speed{#blank#}6{#/blank#}(grow) in China. However, these “junk foods” have long been criticized by health experts because {#blank#}7{#/blank#} (their) can't provide balanced nutrition(营养). The experts also show that some foreign fast food contains a food coloring, Sudan I, {#blank#}8{#/blank#}can cause cancer.

    In fact, China has many of its own traditional fast-food dishes. Among them, dumplings, soybean milk and noodles {#blank#}9{#/blank#}(be) the most popular. Compared with foreign fast food, those traditional ones are healthier. {#blank#}10{#/blank#}many Chinese still enjoy the special taste and the good environment in the foreign fast-food chains even though there exist some potential（潜在的）risks.

    Yesterday was a crazy day. I felt very tired {#blank#}1{#/blank#}I had a ton of work stuff going on. Then I got {#blank#}2{#/blank#}message from one of my teammates. It said, “We want to let you know that there are people who see and {#blank#}3{#/blank#}(true) appreciate all your hard work.” This meant more to {#blank#}4{#/blank#}(I) than anything else in a long while. And it made me think that maybe I need to set time aside {#blank#}5{#/blank#}(tell)the people in my life how much I appreciate what they did. Say “thank you” to the guy behind the counter, telling him that you appreciate how hard he {#blank#}6{#/blank#}(work); tell your daughter that you are proud of her {#blank#}7{#/blank#}(perform)at school; tell your mom that you notice how much she does {#blank#}8{#/blank#}the family. Sometimes when a long time goes by without {#blank#}9{#/blank#}(recognize) for the good we do, we start to get upset, but a simple statement of appreciation could make us become {#blank#}10{#/blank#}(energy )again for a good long time.

China's Chang'e 5 mission successfully delivered samples(样本)of moon rock and dust to Earth on December 17, 2020. It{#blank#}1{#/blank#}(mark) the first time in 4 years that moon rocks have been brought back to our planet, since the Soviet Union's I.una 24 mission in 1976.

The sample capsule landed in Inner Mongolia{#blank#}2{#/blank#}a little after 2：00 a. m. Recovery teams in trucks and helicopters located the landing site shortly after and secured the sample{#blank#}3{#/blank#}(contain).

While Apollo-era moon rocks are estimated to be about 3 to 4 billion years old, the material{#blank#}4{#/blank#}(collect) by Chang'e 5 is from a site in the northwest region of the moon's near side. This area was formed{#blank#}5{#/blank#}(late), and the rocks here are thought to be only about 1.2 billion years old. That means scientists could learn more about the evolution of the moon and test out new techniques for estimating the age of geological samples from other{#blank#}6{#/blank#}(planet)and moons(卫星).

The Chang'e lunar program, {#blank#}7{#/blank#}includes landing two lunar rovers(月球车)on the moon's surface, has been{#blank#}8{#/blank#}(remarkable)successful. Although Chang'e 5 was a short mission, it's one of{#blank#}9{#/blank#}most complex projects undertaken by the Chinese space program so far. The country is far from done with the moon—Chang'e 6, a second lunar sample return, is scheduled{#blank#}10{#/blank#}(launch) in 2023 or 2024.