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问题 单项选择题

科学家已经能够通过基因工程的方法，能使番茄果肉细胞中含有人奶蛋白。以下有关该基因工程的叙述错误的是（）

A.采用反转录的方法得到的目的基因有启动子、终止子

B.用同种限制酶处理质粒和含目的基因的DNA，可产生相同的黏性末端而形成重组DNA分子

C.番茄的叶肉细胞可作为基因工程中的受体细胞

D.启动子对于目的基因在番茄的叶肉细胞中的表达是不可缺少的

答案

参考答案：A

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Part 4


Questions 26-45


·Read the following passage and decide which answer best fits each space.
·Forquestions26-45, markoneletterA, B, C or D on the Answer Sheet.
Both (26) and zoology are parts of a more general field of science, biology. The two are studies of (27) things, which share certain characteristics, (28) they are plants or animals. Botany deals with plants, whose organisms that can (29) their own food by the use of sunlight. Zoology on (30) hand, deals with animals, those organisms that cannot manufacture their own food and are thus dependent (31) plants for their food.
(32) plants and animals share many abilities, the extent (33) which plants can exercise some of those abilities is (34) . For example, both plants and animals need food, water, and warmth for growth, (35) plants can move to (36) those needs only by the slow extraction of their leaves and roots, while animals can move relatively (37) distances in relatively little time. When an animal is hurt with needle, the animal will (38) the part of the body (39) . This ability to draw back (40) pain or irritation, called irritability, is found only to a very limited extent in plants.
If plants (41) the same (42) as animals, animals would have had a more difficult time finding food. If animals were as limited as plants, they might (43) a means of manufacturing their own food, as plants do now. The world would be a very different place (44) it is if the characteristics of plants and animals were (45)

A．share

B．achieve

C．extend

D．withdraw
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单项选择题

跗骨管综合征可能进行的治疗干预不包括()

A．手术松解屈肌支持带

B．在跗骨管内注射局部镇痛剂与类固醇

C．口服皮质类固醇

D．治疗神经病性疼痛的药物如：加巴喷丁

E．都不包括
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