在美国公立学校发展史上做出杰出贡献,并被誉为“美国公立学校之父”的教育家是 ( )
A.约翰·杜威
B.本杰明·富兰克林
C.贺拉斯·曼
D.亨利·巴纳德
参考答案:C
书面表达。
Tina 是你的好朋友,根据提示写一篇短文,题目:My good friend
提示:她擅长弹钢琴,英语学得最好,她经常帮助别人,同学们都很喜欢她。她的课
余生活非常丰富,她喜欢听广播,她认为爵士调频107.9兆赫(Jazz107.9FM)最好。她也
喜欢看电影,尤其是去电影城(Screen City)看电影。
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The similarity between ichthyosaurs and fish is an example of convergence, a process by which different classes of organisms adapt to the same environment by independently developing one or more similar external body features. Ichthyosaurs were marine reptiles and thus do not belong to the same class of organisms as fish. However, ichthyosaurs adapted to their marine environment by converging on external body features similar to those of fish. Most strikingly ichthyosaurs, like fish, had fins. If the statements above are true, which one of the following is an inference that can be properly drawn on the basis of them
A.The members of a single class of organisms that inhabit the same environment must be identical in all their external body features.
B.The members of a singly class of organisms must exhibit one or more similar external body features that differentiate that class from all other classes of organisms.
C.It is only as a result of adaptation to similar environments that one class of organisms develops external body features similar to those of another class of organisms.
D.An organism does not necessarily belong to a class simply because the organism has one or more external body features similar to those of members of that class.
E.(E) Whenever two classes of organisms share the same environment, members of one class will differ from members of the other class in several external body features.