Can you walk in a straight line? The question is much more difficult to answer than you think. Believe it or not, your eyes and ears help you to walk!

A recent experiment held in Japan shows that it is almost impossible for people to walk exactly straight for 60 meters.

　　The Tokyo University of Agriculture and Technology asked 20 healthy men to walk as straight as possible for 60 meters at normal speed.

Each man had to wear socks soaked with red ink and walk on white paper fixed flat to the floor. The footprints showed that all walked in a winding rather than a straight line.

Researchers found that people readjust their direction of walking regularly. The amount of meandering（曲折前行） differed from subject to subject.

This suggests that none of us can walk in a strictly straight line. Rather, we meander, mainly due to a slight structural or functional imbalance of our legs. So steps by the left and right legs of a person are different.

As a result, although we may start walking in a straight line, several steps afterwards we have changed direction. Eyesight helps us to correct the direction of walking and leads us to the target.

Your ears also help you walk. After turning around a lot with your eyes closed, you can hardly stand still or walk straight. It's all because your ears are still spinning and can't help you keep your balance. Inside your inner ear is a structure containing liquids. Inside your ears are many minute hair-like structures that move around as the liquid flows.

When you spin the liquid inside also spins. The difference is that when you stop, the liquid continues to spin for a while. Dizziness（眩晕） is the result.

　　For the moment, although your eyesight tells you to walk in a straight line your brain listens to your spinning ears, thus you don't walk in a straight line!

1．When you walk for 60 meters, you         .

       A．can walk straight without effort           

       B．meander at first, and in while walk in a straight line

       C．can’t walk exactly straight at any time

       D．can almost not cover the distance in a straight line

2．Why most time can we only wind our way?

       A．Because our eyes direct us to.

       B．Because our ears direct us to.

       C．Because of a slight structural or functional imbalance of our legs.

       D．Because our eyesight and ears aren’t always in harmony with each other.

3．According to the research, we can be led to the target mainly due to         .

       A．our eyesight         B．our brain             C．our inner ear        D．our sense of direction

4．Which of the following can prove that your ears help you walk according to the passage?

       A．Your are always meandering most time, but you can arrive where you want to go.

       B．After you turn around a lot with your eyes closed, you almost can’t keep balance.

       C．When you walk to a target, you readjust your direction of walking regularly.

       D．You start walking in a straight line, several steps afterwards you’ll change direction.

阅读短文,根据所读内容, 在下表中的空格处填上适当的单词或短语, 每空不超过3个单词。
Cloning has caused much debate..On the one hand , some scientists think valuable tissues and organs can be used to save human lives .On the other hand , some fear that mankind may produce a monster .
Carter: I believe that human cloning is totally immoral . If we interfere with nature, we will have to deal with the consequences .Who knows what could happen? We could produce a monster .Human life would no longer be unique .Human race is using up Earth’s resources . Surely we should be having fewer babies in order to reduce Earth’s population , not cloning more .I feel sorry for ladies who cannot have babies ,but there are many children with no parents ,who would be delighted to have new parents . Ladies who cannot have babies can  adopt children with no parents
Jake :I think cloning is fantastic. It is a great scientific advance.  After all ,scientists have been challenging questions of morality for centuries .On a personal note ,cloning will change my life .My daughter died of heart failure 7 years ago .I miss her very much and hope to clone a new daughter to be with me .That would be nice. .

— Do you think we’ll get somewhere in he future.

— I believe it’s quite_____ that we’ll make a difference so long as we work harder.

  A. certainly   B. possibly    C. probably    D. likely

Can you understand the beginning of this article?
“My smmr hols wr CWOT. B4, we usd 2go2 NY 2C my bro, his GF & 3 kds FTF.”
The Scottish teacher who received it in class had no idea what the girl who wrote it meant. The essay was written in a form of English used in cell phone text messages. Text messages (also called SMS2) through cell phones became very popular in the late 1990s. At first, mobile phone companies thought that text messaging would be a good way to send messages to customers, but customers quickly began to use the text messaging service to send messages to each other. Teenagers in particular enjoyed using text messaging, and they began to create a new language for messages called texting.
A text message is limited to 160 characters, including letters, spaces, and numbers, so messages must be kept short. In addition, typing on the small keypad of a cell phone is difficult, so it’s common to make words shorter. In texting, a single letter or number can represent a word, like “r” for “are,” “u” for “you,” and “2” for “to.” Several letters can also represent a phrase, like “lol” for “laughing out loud.” Another characteristic of texting is the leaving out of letters in a word, like spelling “please” as “pls.”
Some parents and teachers worry that texting will make children bad spellers and bad writers. The student who wrote the essay at the top of this page said writing that way was more comfortable for her. (The essay said, “My summer holidays were a complete waste of time. Before, we used to go to New York to see my brother, his girlfriend, and their three kids face to face.”)
Not everyone agrees that texting is a bad thing. Some experts say languages always evolve, and this is just another way for English to change. Other people believe texting will disappear soon. New technology for voice messages may soon make text messages a thing of the past.
【小题1】What is the writer’s opinion of text messaging? 

How hard we have all prayed(祈祷) to grow up quickly, and looked forward to the happy days of being a grown-up and enjoying the many interests that a youth should have.
At last, you have grown up. At least you are no longer a child. They call you “young lady”. You then enjoy the pleasure of being a young lady. You are proud of being a grown-up teenager. People welcome you-this young lady-heartily. You are glad that your prayer has been answered.
But there is always something that troubles you a lot. You say; “Papa and Mama, give me some money please. My pocket money is all gone already.”
“No”, they say, “your age is a dangerous age. If you have too much money to spend, it won’t do you any good.” Then you have to stay at home because you dare not go out with an empty pocket.
Another time you tell your grandma, “Grandma, see, I am a grown-up now.”
“Good, now, you can sit here and knit (编织) this for me while I go and have a rest.” To show that you are no more a child, you have to sit there the whole afternoon doing the work, which only a grown-up can do. After an hour, you find it hard to do, and give the knitting basket back to your grandma. Your grandma criticizes your work. You hear what she says, “Such a big girl can’t do such easy work.” You wish then you were a child again.
But the fact is, you are growing up, and you can’t help it. That’s the way it goes!
【小题1】The passage is told about _______ problems.