题目

枯草芽孢杆菌盛产蛋白酶，后者在生物医药和日用化工等生产领域具有重要的经济价值，且已大规模产业化应用．（1）在培养包括枯草芽孢杆菌在内的异养型微生物时，培养基营养成分应包括水和__（用序号组合回答）。①淀粉 ②蛋白质 ③生长因子 ④葡萄糖 ⑤无机盐为筛选枯草芽孢杆菌的蛋白酶高产株，将分别浸过不同菌株（a～e）的分泌物提取液及无菌水（f） 的无菌圆纸片置于含某种高浓度蛋白质的平板培养基表面；在37℃恒温箱中放置2～3天，A little boy asked his mother, “Why are you crying?” “Because I’m a woman,” she told him. “I don’t understand,” he said. His mum just hugged him and said, “You 1will.” Later the little boy asked his father, “Why does my mother seem to cry for no reason?” “All women cry for no reason,” 2 so much could his dad say. The little boy grew up and became a man, still 3 why women cry.4 he gave a call to God, and when God got on the phone, he asked, “God, why do women cry so 5?” God said, “When I made the woman she had to be6 I made her shoulders 7enough to carry the weight of the world; yet, gentle enough to give8.” “I made her 9childbirth and the rejection that many times comes from her children. I gave her hardness that allows her to keep going when everyone else 10 and to take care of her family in spite of sickness and fatigue (劳累) without11. I gave her the sensitivity to 12her children under any and all circumstances, 13 her child has hurt her very badly. I gave her wisdom to carry her husband through his 14. I gave her wisdom to know that a good husband never15his wife, but sometimes tests her strengths and her resolve to stand beside him 16. And finally, I gave her a tear to shed. She can use it whenever it is needed.” “You see, the beauty of a woman is not in the 17she wears, the figure that she carries, or the way she 18her hair. The19of a woman must be seen in her eyes, because that is the doorway to her heart and the place where love20.”1.A.surelyB.neverC.probablyD.seldom2.A.onlyB.evenC.almostD.hardly3.A.hopingB.knowingC.wonderingD.expecting4.A.ActuallyB.GenerallyC.LuckilyD.Finally5.A.easilyB.rarelyC.simplyD.excitedly6.A.cleverB.beautifulC.specialD.ordinary7.A.thickB.fatC.wideD.strong8.A.sympathyB.comfortC.kindnessD.mercy9.A.standB.loadC.acceptD.burden10.A.gives inB.gives awayC.gives upD.gives out11.A.difficultyB.dangerC.restD.complaining12.A.controlB.loveC.respectD.satisfy13.A.even ifB.in caseC.so thatD.as though14.A.disagreementsB.misunderstandingsC.faultsD.quarrels15.A.mindsB.helpsC.refusesD.hurts16.A.nervouslyB.tiredlyC.determinedlyD.unselfishly17.A.clothesB.smileC.hairD.glasses18.A.washesB.dyesC.cutsD.combs19.A.figureB.intelligenceC.beautyD.appearance20.A.hidesB.livesC.storesD.comes