【名词&注释】
杂交瘤技术(hybridoma technique)、新技术(new technology)、苔藓植物(bryophytes)、叶绿体(chloroplast)、至关重要(very important)、单倍体植物(haplophyte)
[多选题]新技术的建立和应用对生物学发展至关重要(very important)。下列技术（或仪器）与应用匹配正确的是
A. PCR技术——扩增蛋白质
B. 杂交瘤技术——制备单克隆抗体
C. 光学显微镜——观察叶绿体的基粒
D. 花粉离体培养——培育单倍体植物(haplophyte)
查看答案&解析
举一反三：
[单选题]DScience can't explain the power of pets, but many studies have shown that the company of pets can help lower blood pressure (血压) and raise chances of recovering from a heart attack, reduce loneliness and spread all-round good cheer. Any owner will tall you how much joy a pet brings. For some, an animal provides more comfort than a husband/wife. A 2002 study by Karen Allen of the State University of New York measured stress (紧张) levels and blood pressure in people - half of them pet owners –while they performed 5 minutes of mental arithmetic (算术) or held a hand in ice water. Subjects completed the tasks alone, with a husband/wife, a close friend or with a pet. People with pets did it best. Those tested with their ani mal friends had smaller change in blood pressure and returned most quickly to baseline heart rates. With pets in the room, people also made fewer math mistakes than when doing in front of other companions. It seems people feel more relaxed (放松)around pets, says Allen, who thinks it may be because pets don't judge. A study reported last fall suggests that having a pet dog not only raises your spirits but may also have an effect on your eating habits. Researchers at Northwestern Memorial Hospital spent a year studying 36 fat people and their equally fat dogs on diet-and-exercise programs; a separate group of 56 people without pets were put on a diet program. On average, people lost about I1 pounds, or 5% of their body weight. Their dogs did even better, losing an average of 12 pounds, more than 15% of their body weight. Dog owners didn't lose any more weight than those without dogs but, say researchers, got more exercise overall-mostly with their dogs - and found it worth doing.
A. What does the text mainly discuss?
B. What pets bring to their owners.
C. How pets help people calm down.
D. People's opinions of keeping pets.
E. Pet's value in medical research.
[单选题]
A. courses
B. benefits
C. challenges
D. features
[单选题]
A. deal with
B. look into
C. point out
D. take down
[单选题]苔藓植物绝大多数是陆生植物，受精过程摆脱了水的束缚。( )
A. 正确
B. 错误
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