【題目】(2016·江蘇) Many young people, most __________ were well-educated, headed for remote regions to chase their dreams.
A. of which B. of them
C. of whom D. of those
科目:高中地理 來源: 題型:
【題目】下圖表示細(xì)胞內(nèi)發(fā)生的一系列重大生命活動,請據(jù)圖回答下列問題:
(1)B過程表示一個細(xì)胞增殖產(chǎn)生的后代,在形態(tài)、結(jié)構(gòu)和功能上發(fā)生 的過程。
(2)該生物為 生物,其中A過程的方式包括 。
(3)細(xì)胞識別是細(xì)胞信號傳導(dǎo)的前提,它是通過__________實現(xiàn)的,細(xì)胞識別的物質(zhì)基礎(chǔ)是該結(jié)構(gòu)上有____________。
(4)圖中對生物的生長(體積增大)起主要作用的過程是____________。
(5)圖中對生物體細(xì)胞種類的增多起主要作用的過程是____________。
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【題目】實驗一:用不帶特殊病原體的小鼠進(jìn)行如下特異性免疫實驗,過程如下圖中①,結(jié)果如下圖中②。圖②中箭頭表示注射T細(xì)胞或血清的時間。
(1)實驗中,對B組小鼠的處理是作為A組小鼠的________處理。
(2)從圖②可知,Ⅱ組與Ⅳ組相比,小鼠脾臟中的活細(xì)菌數(shù)量的增長趨勢_______說明血清中的________不能有效抑制脾臟內(nèi)的細(xì)菌繁殖。注射來自于A組小鼠的T細(xì)胞后,在4 d內(nèi)I組小鼠脾臟中的活細(xì)菌數(shù)量________,說明該組T細(xì)胞(活化T細(xì)胞)________細(xì)菌數(shù)量的增長。由此推測該細(xì)菌生活在________。
(3)實驗中,IⅣ組小鼠感染的是________,感染的時間是在注射T細(xì)胞或血清的________d。
實驗二:在體外觀察小鼠的T細(xì)胞和巨噬細(xì)胞(一種吞噬細(xì)胞)對細(xì)菌X的殺傷力,結(jié)果如圖。
(4)由圖可知,能有效殺傷細(xì)菌X的是________細(xì)胞,而不是活化T細(xì)胞。
(5)有人假設(shè),活化T細(xì)胞釋放某種物質(zhì)活化了巨噬細(xì)胞。若用體外實驗驗證該假設(shè),實驗組應(yīng)選擇的實驗材料包括____________________。
a.培養(yǎng)過活化T細(xì)胞的培養(yǎng)液
b.培養(yǎng)過巨噬細(xì)胞的培養(yǎng)液
c.A組小鼠的巨噬細(xì)胞
d.B組小鼠的巨噬細(xì)胞
e.培養(yǎng)過未活化T細(xì)胞的培養(yǎng)液
f.細(xì)菌X
(6)該系列實驗的目的是研究_____________________。
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【題目】The performance was a great success because the orchestra was by an internationally famous conductor.
A. directed
B. performed
C.conducted
D. staged
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【題目】China’s economy is sure to develop very quickly ________ the new government is able to work scientifically
and practically.
A. even though B. in case
C. as though D. in that
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【題目】 (2017·江蘇) In 1963 the UN set up the World Food Programme, one of ____________ purposes is to relieve worldwide starvation.
A. which B. its C. whose D. whom
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【題目】 _______ not for the support of the teachers, the student could not overcome her difficulty.
A. It were B. Were it
C. It was D. Was it
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【題目】Professor Hawking asks his students to read the newspaper to keep _______ of current affairs.
A. watched B. observed C. informed D. noticed
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【題目】The pen ___________ he is writing is mine.
A. with which B. in which
C. on which D. by which
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