【題目】 ,Anna did not feel happy at all.
A. As she was well married
B. Well married as she was
C. Well married as was she
D. Married well as she was
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科目:高中地理 來源: 題型:
【題目】You are waiting at a wrong place. It is at the hotel __________ the coach picks up tourists.
A. who
B. which
C. where
D. that
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【題目】(12分)阿爾茨海默。ˋD,俗稱“老年癡呆”)是一種嚴(yán)重的中樞神經(jīng)系統(tǒng)退行性疾病。研究表明,AD病人的神經(jīng)細(xì)胞外β淀粉樣蛋白(Aβ)沉積,這種物質(zhì)的沉積會(huì)損壞周圍神經(jīng)細(xì)胞膜和線粒體膜,導(dǎo)致神經(jīng)細(xì)胞的損傷。下圖表示兩類神經(jīng)元及突觸的差異,請回答下列問題。
(1)在神經(jīng)沖動(dòng)由圖中A點(diǎn)傳到D點(diǎn)的過程中,B處興奮時(shí)膜外電位為________,C處發(fā)生的信號轉(zhuǎn)換是_________________________。
(2)研究發(fā)現(xiàn),病變個(gè)體中Aβ的沉積使突觸小體中線粒體損傷,引起乙酰膽堿(一種神經(jīng)遞質(zhì))的合成和釋放量________,興奮在神經(jīng)細(xì)胞之間的傳遞速率________,病人表現(xiàn)出記憶障礙。
(3)乙酰膽堿與位于________上的相應(yīng)受體結(jié)合后,會(huì)立即被乙酰膽堿酯酶催化水解,其生理意義是___________________________________________。
(4)向患者體內(nèi)注射抗Aβ的抗體是治療AD的方法之一,其原理是_____________________________________________________。
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科目:高中地理 來源: 題型:
【題目】I hope this book will be to the beginners of English
A. some help
B. great help
C. for very help
D. of some help
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【題目】 (2017·北京) People __________ better access to health care than they used to, and they’re living longer as a result.
A. will have B. have C. had D. had had
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【題目】
--- Why didn’t you , Billy?
--- Sorry, dear. But I really forgot where I was supposed to meet you.
A. make a promise
B. break your promise
C. keep your promise
D. lose your promise
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【題目】The Eagles went home because they did not win the tournament.
A. angrily and bitterly B. angrily and bitter
C. angry and bitterly D. angry and bitter
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【題目】
--- What made his mother so angry?
--- the exam.
A. Because he didn’t pass
B. His not passing
C.He passed
D. Because he not passing
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【題目】(2017·北京) The little problems __________ we meet in our daily lives may be inspirations for great inventions.
A. that B. as C. where D. when
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