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Li Dong is a farmer. He has a very big 36 . On the farm, he grows oranges, grapes and bananas. Many people come to 37 his farm. He is a successful young man and becomes very famous. In 2003, he went back to his hometown 38 he finished middle school. “What work can I do?” he said to himself. Then he had an idea. “I’m interested 39 farming. I can grow fruit!” He began to watch many 40 on TV about growing fruit. He also read a lot of books about it. Then he went to 41 on Mr Wang’s farm for two years. He learned a lot there. In 2005, he started his own fruit farm. 42 , Li Dong’s farm was small. But now, his farm is much 43 . His fruits are very good. He sends them to many big 44  in China, such as Shanghai, Beijing and Guangzhou. He also grows vegetables and raises chickens on his farm. His family eats very   45 food. He has a very happy family. 小题1: A.farm B.park C.school D.shop 小题2: A.look B.take C.visit D.notice 小题3: A.since B.after C.though D.so 小题4: A.in B.on C.at D.for 小题5: A.games B.concerts C.programmes D.plays 小题6: A.see B.play C.eat D.work 小题7: A.At last B.At that time C.At this moment D.At once 小题8: A.big B.bigger C.the biggest D.biggest 小题9: A.villages B.schools C.cities D.farms 小题10: A.healthy B.bad C.terrible D.unhealthy
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【单选题】关于蛋白质等电点的叙述,正确的是 :
A.
在等电点处,蛋白质分子所带净电荷为零
B.
等电点时蛋白质变性沉淀
C.
在等电点处,蛋白质的稳定性增加
D.
等电点处蛋白质是兼性离子
【简答题】Rico is a dog who lives in Germany(德国). His owners trained him from a young age to find his toys. When they say the name of a certain toy, Rico can find it. In fact, he seems to know the names of 200 ...
【多选题】下列说法正确的是( )
A.
来自新世界的酒一般比旧世界的酒度数要高
B.
距现在1年以上的酒,风格以酸爽、芳香为主
C.
3年以上的酒,呈现出简单果味加木桶辛香的年轻派
D.
酒庄一般从葡萄园耕作、到酿酒、到陈年、到装瓶都由酒庄自己完成
【多选题】下列说法正确的是。
A.
陈酿时间越久,白兰地的风格就越柔顺,香气也就越精美,价格也就越昂贵。
B.
白兰地最佳饮用酒龄为20-40年,一般不超过50年,顶多不会超过70年
C.
新蒸馏出来的原白兰地口味暴辣,香气不足,它从橡木桶的木质素中抽取橡木的香气,与自身单宁成分氧化产生的香气结合起来,形成一种白兰地特有的奇妙的香气。
D.
用葡萄皮或葡萄渣作原料制作白兰地,发酵时间一般需要10-15天,温度适宜只需7-8天。
【多选题】蛋白质等电点说法正确的是
A.
蛋白质在等电点时,所带电荷为零
B.
等电点是使得两性物质所带电荷为零的一个pH
C.
等电点会随着环境变化变化
D.
不同的蛋白质具有不同的等电点。
【判断题】使用重金属盐沉淀蛋白质时,其等电点要高于蛋白质的等电点。
A.
正确
B.
错误
【简答题】什么是蛋白质的等电点?蛋白质处于等电点时有什么特征?
【单选题】关于蛋白质等电点的叙述,下列哪项是正确的 [     ]
A.
在等电点处,蛋白质分子所带净电荷为零
B.
等电点时蛋白质变性沉淀
C.
不同蛋白质的等电点不同
D.
在等电点处,蛋白质的稳定性增加
E.
蛋白质的等电点与它所含的碱性氨基酸的数目无关
【简答题】蛋白质的等电点:____________________________________________。
【单选题】Who trained him?
A.
Old Daniel
B.
Squire Gordon
C.
His master
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