Have you ever wished that you could brush your teeth while you’re moving? It turns out that scientists have the answer. There’s a special kind of edible toothpaste（牙膏）you can actually eat. You can use it to brush your teeth and eat it afterward. Without the need to spit（吐出）, edible toothpaste is really convenient.

　 NASA invented edible toothpaste in the 1960s. They made it for astronauts in space and people called it “the astronaut toothpaste”. This is because spitting out toothpaste in space can be dangerous. Without gravity（重力）it can go everywhere and can damage spacecraft computers if it gets inside them. Edible toothpaste doesn’t foam（起泡沫）either so there is no mess.

　 If you don’t like the sound of edible toothpaste, there’s also a special toothbrush you can buy. When people travel to a place without water, they often use it. You just need to chew and it cleans your teeth just like you are using a normal brush. After you finish brushing your teeth, you spit it out and get rid of it. No mess and no worries.

(　　 )73. The Chinese meaning of the word “ edible ” in Paragraph 1 is ________.

A. 可以用的　 B. 可以吃的　　 C. 可以喝的　　　 D. 可以买的

(　　 )74. If people spit out normal toothpaste in space, ________.

A. it will fall down to the ground　 B. it doesn’t foam and there’s no mess

C. it’s bad for the astronaut’s health D. it may cause problem for the spacecraft

(　　 )75. According to the article, which is NOT true about edible toothpaste?

A. It’s very convenient.　　 B. You can eat it.

C. You can spit it out.　　　 D. You can use it many times.

(　　 )76. The last paragraph mainly talks about 　　　 .

A. water　　 B. a normal brush　 C. a special toothbrush　 D. edible toothpaste

He was struggling(费劲) to tie his shoes. I was struggling with whether I should help him.
I did, and he was grateful.
“Thank you,” he said.
“I’m glad I could help. I just thought it would be easier for me to reach,” I said.
He was a disabled man, and forced to look down most of the time. His arms and legs were twisted(扭曲的) terribly, and he couldn’t do what the rest of us would consider easy tasks. He always managed to look up to see how you reacted(反应) to his words, however. He had a big smile, making me feel comfortable.
I was still on my knees by his wheelchair.
“ Nice shoes,” he said.
“Thanks. No one ever complimented (赞美) me on them before,” I said.
“No one has the same view of the world as I do,” he replied.
“Tell me about the world as you see it,” I said smiling.
“Most people can see if someone is comfortable with them or not in their eyes. I see it in their feet.” he said. “If people keep moving their feet, I just let them go, because I know they’re impatient with me. I don’t want to make people uncomfortable.
“What about me? I asked.
“I could see your compassion. And then you came down to my level. I was the one who was nervous.” he said. “I don’t normally have someone look me in the eye.”
“They don’t know what they’re missing,” I told him.
“My old face is nothing to brag(自夸) about.” he said.
“But that smile is so big.”
Yes, and it’s not only a big smile but an attitude.
【小题1】The disabled man knew people were impatient mostly by their _________.

阅读短文，按要求完成各题。
If the eyes are the windows of the soul, then the body is the mirror of our feelings. If we are feeling great, we may give our body signals(信号). If we look at someone else’s body, we can often tell how thy are feeling by their body signals. So reading body language signals is a great tool in daily communication.
In case(假使) you don’t think that learning how to read and use body language is important, here are some numbers for you. 7% of the information we receive is from what people actually say, and 38% of the information we receive is from the tone(语气) and the speed of their voice; while 55% of the information we receive is from their body language.
These non-verbal(非语言的) signals will help you a lot, but you still need to focus on what people are saying. If you focus too much on their body language signals, you and the person may feel uncomfortable. It is useful to be able to read people’s body language, but it is useful to learn how to send the right signals and avoid the wrong signals too. Body language may be given several interpretations. Many signals have different meanings, depending on the person and the situation. Be sure of it when you are trying to read a body language signal.
Facial expression is one of the body languages. Facial expressions are one or more movements on a person’s face, such as frowning(皱眉)，raising your eyebrows and rolling(旋转) your eyes. Scientists say that humans have 80 muscles(肌肉) on their faces. These muscles can make 7.000 different facial expressions. These expressions can be put into six classes. They are happiness, sadness, anger, surprise, fear and disgust(厌恶)。
For example, when people think a certain food tastes disgusting, they usually make a funny face. When people are surprised, they often raise their eyebrows and open their eyes wide.
If people can read facial expressions correctly, they may be better at knowing other people’s feelings. That can help people make more friends. However, sometimes people have to be careful when reading others’ faces. It’s rude to stare at others for a long time.
【小题1】根据短文内容完成句子（每空限填一个单词）。
From the first paragraph of the passage, we know that          your eyes         your body language signals are great tools in daily communication.
【小题2】根据短文内容完成句子（每空限填一个单词）。
From the second paragraph of the passage, the numbers mentioned are to show the       
         body language.
【小题3】根据短文回答问题。
According to the passage, how many classes of facial expressions do you know? What are they?                       
                                                                       
【小题4】把短文中画底线的句子译成汉语。
                                                                        
【小题5】根据短文内容用一个完整的英文句子（限10词以内）回答问题。
What is the writer’s opinion on the body language?