题干

关于现代生物技术,下列说法正确的是(  )

A:利用生物技术可以促进化石能源的开发,但不能开发生物能源

B:现代生物技术正在引发新的技术革命

C:生物技术可以克隆生物体,但不能克隆生物的器官

D:生物技术给人类带来了巨大的利益,并且没有任何副作用

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B

同类题1

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    I have happy memories of trips to Europe, but my trip to Romania (罗马尼亚) was unique. When I was there as recalled, it was like being in a “James Bond” movie. My husband was born there, but his family sent him to study in Italy. Before he left, his mother told him, “As long as I write in pencil, don't come back. When I write to you in pen, it's safe to return.” But she never wrote in pen.

    My husband lived a poor life in Italy. He applied to go to America, but there was a limit in number and he was rejected. He was accepted by Canada, though, and from Calgary he jumped onto a train to San Francisco. There he stayed —illegally. He became a US citizen when we got married. By then he was a charming European with a Romanian accent and the manners of a prince.

    With seven years' experience in America, a US passport, and two children later, he felt it was safe to visit Romania. He hadn't seen his mother, two sisters, and two brothers since he was sixteen. We flew to Munich, Germany; picked up the German-made car we had purchased in the States; and drove to Romania via Austria and Hungary. When we reached Bucharest, the capital city of Romania, his family was waiting outside his sister's house to greet us. After a long time of hugging, kissing, and crying, his family also hugged me, the American wife with two young children. They had great interest in me. Few Americans visited Romania at that time, and most Romanians had little chance to travel. I had brought an English-Romanian dictionary with me and managed to communicate, using only nouns, with no verbs. My Romanian improved, and the family's stock of English words increased, but mostly I spoke in broken, New York-accented Romanian. The sisters loved their gifts of skirts and purses, the brothers loved the radios, and the children loved the candy. We made side trips to the Black Sea and enjoyed sightseeing in beautiful mountains. Dining at outdoor cafes to the music of violins was fantastic with fancy flavor, but nothing was as special as family dinners.

    Romania didn't have many dry cleaners. Most homes had old-fashioned washing machines but no dryers, and it was a hot summer. My husband's relatives didn't want to risk dirtying their clothes. Their solution was as simple as it was shocking: the women only wore their bras(胸罩) and slips (衬裙) at dinner table. The men were eating without shirts. They all had jobs, so time was precious. Having dinner without proper clothes was a small inconvenience compared with the effort of washing clothes —at least in my husband's home, perhaps all across Romania. I, of course, having just met them, ate fully clothed. I washed my clothes by hand and hung them outdoors to dry.

    On the last night of our three-week stay, we had a large family dinner. I was tired of washing my clothes. So I pulled my dress over my head and placed it on the chair behind me. All men and women applauded for my action. Even with my poor Romanian, I understood that they were saying, “She's part of our family now.”

    My children were 4 and 5 at the time, but they still have memories of that trip. They know how to say, “Good morning.” and “There are apricots (杏子) on the tree.” I can still say, “Do you speak Romanian?” and “I swim in the Black Sea.” But most of all, I remember sitting at a long dining-room table in my bra, enjoying meatballs with fresh garlic (大蒜).

同类题4

阅读下列短文,从每题所给的四个选项中,选出最佳选项。
C
    There are an extremely large number of ants worldwide. Each individual ant hardly weigh anything, but together they weigh almost the same as all of mankind. They also live nearly everywhere, except on frozen mountain tops or around the Antarctic. For animals their size, ants have been surprisingly successful, largely due to their wonderful social conduct.
    In groups that vary in size from a few hundred to tens of millions, they organize their lives with a clear distribution of labor. Even more amazing is how they achieve this level of organization. While we use sound and sight to communicate, ants depend mostly on pheromone (信息素), which is a kind of chemical released by individuals and smelled or tasted by fellow members of a group. When an ant finds food, it produces a pheromone that will lead others straight to where the food is. When an ant comes under attack or is dying, it sends out an alarm pheromone to warn the whole group to prepare for a defensive fight.
    In fact, when it comes to the art of war, ants have no equal. They are completely fearless and will take on an animal much larger than themselves, attacking in large groups and beating their target. They show so much devotion to their group that not only soldier ants but also worker ants will sacrifice their lives to help defeat an enemy.
    United and devoted, these little animals have survived on the earth for more than 140 million years, far longer than dinosaurs. Because they think as one, they have a united intelligence greater than you would expect from one small individual ant.