题目

The American Academy of Dermatology (美国皮肤病协会)’s official position on sunscreen is that everyone, ________ age, gender or race, should wear it because anyone can get skin cancer.A.according to B.instead of C.regardless of D.because of 答案:【答案】C【解析】考查固定短语辨析。句意:美国皮肤病协会对于防晒霜的官方立场是,不论年龄,性别或者种族,每个人都应该擦防晒霜,因为任何人都有可能患上皮肤癌。A. according to按照;B. instead of代替;C. regardless of不管,不论;D. because of因为。根据“because anyone can get skin cancer”并结合句意可如图,△ABC的面积为1.第一次操作:分别延长AB,BC,CA至点A1,B1,C1,使A1B=AB,B1C=BC,C1A=CA,顺次连接A1,B1,C1,得到△A1B1C1.第二次操作:分别延长A1B1,B1C1,C1A1至点A2,B2,C2,使A2B1=A1B1,B2C1=B1C1,C2A1=C1A1,顺次连接A2,B2,C2,得到△A2B2C2,…按此规律,要使得到的三角形的面积超过2010,最少经过几次操作 (   )A. 6 B. 5 C. 4 D. 3
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