关于病毒感染的实验室诊断，叙述正确的有（）
A.细胞培养是最常用的病毒分离方法
B.光学显微镜检查组织或脱落细胞中可发现特征性病毒包涵体
C.免疫荧光标记技术检测组织细胞内病毒抗原是一种快速的早期诊断方法
D.血清学试验：双份血清抗体增高4倍以上，为机体对现症感染产生抗体
E.利用核酸杂交技术和PCR技术可检测标本中的病毒核酸
参考答案：A, B, C, D, E
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| After years of marriage, I started to go out with another woman. "You love her," my wife said. "I love you," I 1 . "But you also love her." The other woman was my 2 , a widow for 19 years, but my work and my three children had made it 3 to visit her only occasionally. That night I called to invite her to go out for dinner and a 4 . "What's wrong, are you OK?" she asked. My mother is the woman who suspects a(n) 5 night call or a surprise invitation is a sign of bad news. "Just want to pass some time with you," I 6 . "Two of us!" She thought about it for a moment, then said OK. That Friday after work, as I drove over to pick her up I was a bit 7 . When arriving, I noticed that she, too, was nervous about our 8 . She smiled like an angel. "I told it to my friends and they were 9 ," she said, "They can't wait to hear about our meeting." We went to a restaurant. My mother took my 10 as if she were the First Lady. After we sat down, I had to read the menu. Her eyes were bad and could only read large 11 . "I read the menu when you were small," she said. "Then it's time that you should relax and let me return the 12 ," I responded. We had an agreeable conversation, nothing extraordinary but each other's 13 . We talked so much that we missed the movie. As we arrived at her house 14 , she said, "I wish I could go out with you again. I agreed 15 ." A few 16 later my mother died of a serious heart attack. It 17 so suddenly that I didn't have a chance to do anything for her. At that moment I understood the importance of 18 in time:"I LOVE YOU" and to give our loved ones the time that they 19 . Nothing in life is more important than your family. Give them the time they deserve, because these things cannot be 20 till "some other time". | ||||
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