迄今为止境, he has read all the books stored in the small library.

They only accept big contracts.

They employ their own specialists.

They approach companies themselves.

A uniform substance doesn’t cope well with knocks because only a small proportion of the material is actually (8) . All the energy from the blow goes towards breaking the material in one or two places, but often the pieces left (9) are pristine (未经破坏的).

But instead of the energy being concentrated in one place, the holes provide many weak spots that all absorb energy as they break, says Vincent. "You are controlling the places (10) the wood breaks, and it can then absorb more (11) , more safely. "

The researchers believe the principle could be applied to any material- (12) example, to manufacture lighter and more protective packaging. It could (13) be used in car bumpers, crash barriers and arm our for military vehicles, says Ulrike Wegst, (14) the Max Plank Institute for Mental Research in Stuttgart. But she emphasizes that you (15) to design the substance with the direction of force in mind. "The direction of loading is crucial," she says.

重寒则热

重热则寒

阴损及阳

阳损及阴

重阳必阴

Even if

However

As soon as

Because of

《中国人民银行法》

《保险法》

《商业银行法》

《银行业监督管理法》

Then, mark the corresponding letter on the Answer Sheet. When I was walking down the street the other day, I happened to (61) a small brown leather purse lying on the sidewalk. I (62) it up and opened it to see if I could (63) the owner’s name. There was nothing inside it (64) some change and an old photo—a picture of a woman and a young girl of about twelve years old, who looked (65) the woman’s daughter. I put the photo back and (66) the purse to the police station, where I (67) it to the desk sergeant. (68) I left, the sergeant took down my name and address (69) the owner might want to write and thank me. That evening I went to have dinner with my aunt and uncle. They (70) a young woman (71) there would be four people (72) the table. Her face was familiar. I was (73) sure that we had not met before, but I could not remember where I had seen her. In the course of conversation, (74) , the young woman happened to mention that she had lost her purse that afternoon. (75) I realized where I had seen her. She was the young girl in the photo, although she was now (76) . She was very surprised, of course, (77) I was able to describe her purse to her. Then I explained that I had (78) her from the photo I had found in the purse. My uncle (79) to the police station immediately to claim the purse. As the police sergeant handed it over, he said that it was an (80) coincidence that I had not only found the purse, but also the person who had lost it.

Then, mark the corresponding letter on the Answer Sheet. When I was walking down the street the other day, I happened to (61) a small brown leather purse lying on the sidewalk. I (62) it up and opened it to see if I could (63) the owner’s name. There was nothing inside it (64) some change and an old photo—a picture of a woman and a young girl of about twelve years old, who looked (65) the woman’s daughter. I put the photo back and (66) the purse to the police station, where I (67) it to the desk sergeant. (68) I left, the sergeant took down my name and address (69) the owner might want to write and thank me. That evening I went to have dinner with my aunt and uncle. They (70) a young woman (71) there would be four people (72) the table. Her face was familiar. I was (73) sure that we had not met before, but I could not remember where I had seen her. In the course of conversation, (74) , the young woman happened to mention that she had lost her purse that afternoon. (75) I realized where I had seen her. She was the young girl in the photo, although she was now (76) . She was very surprised, of course, (77) I was able to describe her purse to her. Then I explained that I had (78) her from the photo I had found in the purse. My uncle (79) to the police station immediately to claim the purse. As the police sergeant handed it over, he said that it was an (80) coincidence that I had not only found the purse, but also the person who had lost it.