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阅读理解 Speak, speak, speak! Practise speaking as often as you can. Speaking to yourself is good practice. Try recording yourself whenever you can. Compare your pronunciation with the master version(原版)to see how you can do better and have another go . If you do this several times, you will find that each time is better than last. Why not learn with someone else? It helps if you can learn with someone else. If you can persuade a friend or family member to study with you, it will make you keep working. Don't get stuck by a word you don't know. Practise improving ways of getting your meaning across when speaking spontaneously(本能地),even if y ou don't know the exact words or phrases. Think of things you might want to say whenever you have spare time. Use facial expressions, hand movements, anything to make yourself understood. Language learning is also about intuition(直觉). Guesswork is an important way to learn a new language. When listening to recorded material, you aren't expected to understand everything first time round. If you play the same piece several times, you will most probably understand something new each time. Build up your vocabulary. A wide vocabulary is the key to successful language learning but don't try to learn too much at once. It's best to study frequently, for short periods of time. Take at most six or seven items of vocabulary and learn them. Put them into sentences to fix them in your mind, and then come back to them later. And above all, have fun! 1. What's the purpose of this passage? A. To tell us the importance of practicing speaking as often as we can. B. To tell us a few tips to help us learn a new language well. C. To tell us that guesswork is an important way to learn a new language. D. To tell us that a wide vocabulary is the key to successful language learning. 2. What's the meaning of the underlined phrase in the first part? A. Have another try or attempt. B. Move away from a place to another. C. Enter a certain state or condition. D. Follow or take a certain course. 3. To learn English well, we shouldn't _______ according to the passage. A. practice speaking as often as possible B. study frequently, for short periods of time to build u p our vocabulary C. try to understand everything and stop when we meet a n ew word D. try to persuade a friend or family mem ber to study with us 4. According to the passage, to learn a new language well, the most important thing is ______. A. speaking as much as possible B. having fun C. a wide vocabulary D. guesswork
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【单选题】当采用自攻螺钉安装板材时,板材的接缝处必须安装在宽度不小于( )的次龙骨上
A.
10mm
B.
20mm
C.
40mm
D.
50mm
【单选题】目的基因导入受体细胞后,是否可以稳定维持和表达其遗传特性,只有通过鉴定和检测才能知道。下列属于目的基因检测和鉴定关键步骤的是检测: [     ]
A.
受体细胞是否有目的基因
B.
受体细胞是否有致病基因
C.
目的基因是否转录mRNA
D.
目的基因是否翻译蛋白质
【单选题】目的基因导入受体细胞后,是否可以稳定维持和表达其遗传特性,只有通过鉴定和检测才能知道。下列属于目的基因检测和鉴定的是 ①检测受体细胞是否有目的基因 ②检测受体细胞是否有致病基因 ③检测目的基因是否转录mRNA ④检测目的基因是否翻译蛋白质 [     ]
A.
①②③
B.
②③④
C.
①②④
D.
①③④
【判断题】SVI就是一个VLAN的接口,只要给该VLAN配置一个IP地址,它就成为了一个SVI。
A.
正确
B.
错误
【单选题】当用自攻螺钉安装板材时,板材接缝处必须安装在宽度不小于( )mm的次龙骨上。
A.
30
B.
40
C.
50
D.
60
【单选题】目的基因导入受体细胞后,是否可以稳定维持和表达其遗传特性,只有通过鉴定和检测才能知道。下列属于目的基因检测和鉴定关键步骤的是 [     ]
A.
检测受体细胞是否有目的基因
B.
检测受体细胞是否有致病基因
C.
检测目的基因是否转录mRNA
D.
检测目的基因是否翻译蛋白质
【单选题】关于子痫发病的时间,哪项是错误的( )
A.
产前子痫最常见
B.
产时子痫较常见
C.
产后子痫较少见
D.
光和声的刺激及气候变冷可以成为诱发因素
E.
终止妊娠后,抽搐不再发生
【简答题】完形填空。 Mr. Dawson was an old grouch (脾气坏的人), and everyone in town knew it. 1 knew not to go into his yard to pick an apple, because old Dawson would come after you with his gun. One Friday, 12-year-old...
【单选题】下列对生物细胞代谢活动的描述,不正确的是( )
A.
大肠杆菌在拟核区转录信使RNA
B.
乳酸杆菌在细胞质基质中产乳酸
C.
衣藻进行光合作用的场所是叶绿体
D.
酵母菌的高尔基体负责合成蛋白质
【简答题】当用自攻螺丝钉安装板材时,板材接缝处必须安装在宽度不小于30mm的次龙骨上。
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