①Susan, a heavy girl, eats much meat and few vegetables every day. {#blank#}1{#/blank#}  

②Mike doesn't like drinking milk or fruit juice. He only drinks a little water each day. {#blank#}2{#/blank#}  

③Paul always has sweet cake for breakfast or dinner. But he only brushes his teeth three or four times each week.{#blank#}3{#/blank#}  

④Lisa is a quiet girl. In her free time, she always reads or plays computer games at home.{#blank#}4{#/blank#}  

⑤Larry usually gets up late in the morning. So she often rushes to school and seldom eats breakfast.{#blank#}5{#/blank#}  

    How did you learn to ride your bicycle? You took a few lessons and then practiced a lot, right?{#blank#}1{#/blank#}No one is born (天生的) knowing how to study. You need a few study skills and then practice them.

    Pay attention (集中注意力 )!

    Do you have difficulty paying attention in class? Are you sitting next to a noisy person? Is it hard to see the blackboard? Make sure you are sitting in a good place that lets you pay attention.{#blank#}2{#/blank#}

      Take dear notes (笔记).

    It's a good idea to write down important things your teacher says or writes on the blackboard in class.{#blank#}3{#/blank#}Good notes can help you study easily.

    Plan ahead (提前计划).

    Waiting until Thursday night to study for Friday's test will make you feel tired.{#blank#}4{#/blank#}One of the best ways to make sure that doesn't happen (发生) is to plan ahead.

    Have a good sleep.

    The test is tomorrow and you're finished your study plan, but you find you just can't remember anything! Don't worry.{#blank#}5{#/blank#}You'll be surprised by what comes back to you in the morning.

    When it comes to the letter grade on your test or homework, you might notice that there is no letter E. Have you ever thought about why that is so?

    In the A. B. C. D and F grading system, the first four letter are typically considered passing grades. An F in this system simply stands for "fail". The word "fail" happens to start with the letter F, which seems to leave out the letter E, The fact of the matter is that any letter can mean "not-passing" or "fail". Some schools have U grade for unsatisfactory", or I grade for "incomplete."

    Even with all this said, we should also point out that E grade actually has been used pretty commonly throughout the history of letter grades in the US.

    The first college in the US to use a letter grading system like the ones we use today is Mount Holyoke College. In 1897, they began to use the following grading scale:

A: 95-100% (excellent)   B: 85-94%(good)   C: 76-84%(fair)

D: 75%(barely passed)   E: below 75%(failed)

    We can see the inclusion of E instead of F.

    Gradually, the letter grading system became more popular throughout the US. However, many schools decided to drop the E grade and go straight to F. There is no evidence(证据)to really support this, but one possible explanation is that teachers were worried that some students and parents might mistake E for "excellent".

    Why do we have letter grades? Well, part of the reason is that they made grading simpler during n time of great change for schools. As the 20th century began, growing cites and an increase in immigration led to larger school classrooms. Most teachers at that time thought this new letter grading system was an easy, fair and clear way to grade students.

    Today, more and more people argue that letter grades don' t fully reflect(反映)student learning. However, as teachers try to improve grading methods, many parents continue to favor the letter grades they got as kids. They are familiar(熟悉) and easy for parents to understand. So while they might not be perfect, the letter grades probably aren't going away any time soon.

    Hi, I'm Wang Li. Today my father buys a new computer for me. It has a keyboard, a screen, a mouse and a printer. I am very happy because I can download(下载) some things from the Internet and print my homework. Do you know how to do your homework on the computer? Let me tell you! First, turn on the computer. Next, click the mouse on new document. Then, write your homework in the new document.

    Of course, I can play computer games on Saturdays and Sundays. I love the computer. What about you, my friend?

    The villas(别墅)were very nice. Beautiful houses, wonderful lawns, and nice gardens. This was the kind of housing estate where John Wood preferred to work.

    It was just before eleven o'clock at night. After John drove around for the fifth time, he thought that he had found the right house-No. 4. There was no light and the garage(车库)door was open. John parked his car in the next street and then came into the garage.

    No one would think that a well-dressed gentleman with a white silk scarf and gloves, was really an excellent thief.

    After looking around the house for a while, John got down to work. He searched every room, and before long, his hands were full. He had two necklaces, some gold rings and a purse with a lot of money. He put all the things in his pocket.

    Then he found a small wall safe(保险箱)in the bedroom. John couldn't wait to take the valuable things from the safe and put them into his own pocket！But the thief met a problem; he couldn't open the safe.

    John wiped a few drops of sweat from his forehead, took off his gloves, and placed them on a chair. Again and again, and finally, he opened the safe. He saw something shining-a huge diamond.

    Suddenly, John heard someone opening the front door. It was the owner of the house. John put the diamond in his pocket, ran to the window, climbed out of the house and drove away in the dark.

    Ten minutes later, the police arrived. After searching the house. the police found an important piece of evidence(证据)that could easily tell who was the thief.

    Do you know what the piece of evidence was?