One morning, I was waiting at the bus stop, worried about {#blank#}1{#/blank#} (be) late for school. There were many people waiting at the bus stop, {#blank#}2{#/blank#} some of them looked very anxious and {#blank#}3{#/blank#} (disappoint). When the bus finally came, we all hurried on board. I got a place next {#blank#}4{#/blank#} the window, so I had a good view of the sidewalk. A boy on a bike {#blank#}5{#/blank#} (catch) my attention. He was riding beside the bus and waving his arms. I heard a passenger behind me shouting to the driver, but he refused {#blank#}6{#/blank#} (stop) until we reached the next stop. Still, the boy kept {#blank#}7{#/blank#} (ride). He was carrying something over his shoulder and shouting. Finally, when we came to the next stop, the boy ran up the door of the bus. I heard an excited conversation. Then the driver stood up and asked, “{#blank#}8{#/blank#} anyone lose a suitcase at the last stop?” A woman on the bus shouted, “Oh, dear! It's {#blank#}9{#/blank#} (I)”. She pushed her way to the driver and took the suitcase thankfully, Five others on the bus began talking about what the boy had done and the crowd of strangers {#blank#}10{#/blank#} (sudden) became friendly to one another.

    Researchers from the University of Michigan have found that astronauts' brains change shape during spaceflight. It is the first study {#blank#}1{#/blank#} (look) into how the brain changes in space. Researchers looked at high-tech MRI(磁共振成像)pictures of the brains of 26 astronauts who spent time in space. Twelve of the {#blank#}2{#/blank#} (astronaut) spent two weeks on the Space Shuttle, and 14 spent six months on the International Space Station. All of them {#blank#}3{#/blank#} (experience) increases and decreases in the size of {#blank#}4{#/blank#} (differ) parts of the brain. The longer an astronaut spent in space ,the {#blank#}5{#/blank#} (big) the size differences were.

    The research produced some {#blank#}6{#/blank#} (interest) findings. One was that on gravity means fluids do not drop in the body, {#blank#}7{#/blank#} there is a shift in the brain's position inside the skull. The brain becomes either smaller or bigger. The findings could help doctors to treat problems that affect the brain's function. They could treat people with problems {#blank#}8{#/blank#} (cause)by long-term bed rest. They could also help those who have a build-up of fluid in the brain, which can lead {#blank#}9{#/blank#} brain damage. We will understand more about {#blank#}10{#/blank#} neurons(神经元)in the brain connect. The findings will also help future trips to Mars.

Unlike some other European languages, English is a little tricky when it comes to writing. How a word{#blank#}1{#/blank#} (pronounce) and how it is actually spelt can be very different things. Take two simple{#blank#}2{#/blank#}(verb) like"have"and "save" shouldn't they be pronounced the same? Why do "sir", "her" and "fur" all rhyme, but "fork"and "work" don't?

Imagine, then, a situation{#blank#}3{#/blank#}two words are spelt and pronounced exactly the same way, but have{#blank#}4{#/blank#}(complete) different meanings. Welcome to the world of homonyms(同形同音异义词){#blank#}5{#/blank#} ( take), for example, the word "fair"- it can be a kind of festival or an adjective to describe the colour of your hair.

So how do you know which{#blank#}6{#/blank#}(mean) someone is referring to?— You don't, except by the context. Obviously, if someone asks you to "give them a hand", they don't want you to remove{#blank#}7{#/blank#}is at the end of your arm.

    Sometimes even the context doesn't help much- the result can be {#blank#}8{#/blank#} (amuse). These sentences play with the double meaning of a noun :I used to be a banker, {#blank#}9{#/blank#}I lost interest.

A small boy swallowed some coins and had to go to hospital when his grandmother phoned{#blank#}10{#/blank#} (ask) how he was, the nurse said, "No change yet."

"Waiter, will the bread be long?" "No, sir. It's round."