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【单选题】
生物世界广泛存在着变异，人们研究并利用变异可以培育高产、优质的作物新品种。下列能产生新基因的育种方式是 [ ]A.
“杂交水稻之父”隆平通过杂交技术培育出的超级稻
B.
用X射线进行大豆人工诱变育种，从诱变后代中选出抗病性强的优良品种
C.
通过杂交和人工染色体加倍技术，成功培育出抗逆能力强的八倍体小黑麦
D.
把合成β-胡萝卜素有关基因转进水稻育成可防止人类VA缺乏症的转基因水稻
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【简答题】What customers dream about are an abundance of information, near-perfect price transparency, and a wealth of special deals.
【简答题】后张法构件长度或跨度等于或大于 时,宜用两端同时张拉的工艺。
【简答题】The price r______ fast in 1993
【判断题】Price transparency refers to the ability of consumers to discover the actual costs merchants pay for products.
A.
正确
B.
错误
【简答题】Writing Based on Knowledge and Experience For this task, you will write an essay in response to a question that asks you to state, explain, and support your opinion on an issue. Typically, an effectiv...
【简答题】Stop and listen! What do you hear? You may hear many different sounds. Some of those sounds may be noise. Noise is a loud or unwanted sound. Noise can be caused by many kinds of machines, such as moto...
【判断题】Price transparency refers to the ease with which consumers can find out what merchants pay for products.
A.
正确
B.
错误
【判断题】Price transparency refers to the ease with which consumers can find out what merchants pay for products.
A.
正确
B.
错误
【单选题】How do the transparency compare for crystalline and amorphous polymers of material that have identical molecular weights?
A.
(A) Transparency of crystalline polymer transparency of amorphous polymer
B.
(B) Transparency of crystalline polymer = transparency of amorphous polymer
C.
(C) Transparency of crystalline polymer transparency of amorphous polymer
D.
(D) Uncertain
【单选题】听力原文：W: Did you see Mary today? M: Yes, why did she have such a long face? W: I don't have the fuggiest idea. M: I thought she'd be happy. W: Yeah, especially since she got a promotion recently. What ...
A.
She is upset.
B.
She is desperate.
C.
She's longing for a gift.
D.
She's hoping for a promotion.
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