蜻蜓的不完全变态发育过程与苍蝇的完全变态发育过程相比,没有的时期是()。 A.卵 B

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问题:

蜻蜓的不完全变态发育过程与苍蝇的完全变态发育过程相比,没有的时期是()。

A.卵

B.幼虫

C.蛹

D.成虫

考点:自然科学知识竞赛生物知识竞赛(综合练习)生物知识竞赛(综合练习)题库
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B The Culture Debate in the US:Whose Culture Is This ,Anyway 美国的文化辩论:空间是谁的文化?
Part of the debate about culture revolves around issues of perspective and ownership. Within a nation such (1) the United States—a nation whose cultural heritage includes elements from every corner of the world (2) are a great many perspectives coexisting and intertwining in the cultural fabriC.When we all ask (3) as individuals, "what belongs to me, to my culture " we are rewarded with a spectacular variety of (4) ; in this way, different perspectives and ownership of different cultural traditions enriches everyone. But when we ask " (5) belongs to us, to our culture " we ask a much harder question. Do the people of the (6) States, or of any culturally complex human society, necessarily share common cultural elements If so, who gets (7) decide what those elements are
This debate is a crucial one in many cultures throughout the world (8) . In the US, the debate promises to impact the way we educate our children—that is, (9) manner and shape in which culture reproduces itself—and the way we write our laws. In (10) countries, equally crucial issues are at stake.
For many people, what is at stake is the character (11) US national identity. Hirsch argues that this identity needs to become less culturally fragmented; others, like Walker, (12) that the national character gets its strength from cultural diversity, from the freedom (at home and in (13) ) to celebrate, honor, and reproduce different cultural traditions. Those who take this latter view follow the reasoning (14) Shweder, arguing that we need to accept that there are multiple valid cultural perspectives and that two (15) perspectives can both be valid even though they might contradict one another.
Recognize that the position you (16) in this debate about culture—whatever position you take—is a political one with implications (17) what we should value, what we should praise, what we should accept, what we should teach. When (18) reflect on this debate, when you contribute your own voice to the discussion, try to be (19) of the implications that follow from your position. When you listen to the voices of others, try to (20) with awareness, deciding for yourself what is at stake and how their positions relate to your own.

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下列与伤寒作鉴别诊断正确的是()

A.恶性组织细胞病

B.流行性斑疹伤寒

C.疟疾

D.革兰阴性杆菌败血症

E.急性风湿热

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下列社会保险保障项目中,()依法必须建立个人帐户

A.基本养老保险

B.失业保险

C.基本医疗保险

D.工伤保险

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试述一个更安全的鉴别对话过程。

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细胞分化过程中,不会出现的是()

A.细胞器的种类发生变化

B.细胞器的数量发生改变

C.蛋白质的种类和数量改变

D.细胞核遗传物质的改变

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