In—— A.the1870 B.1870s C.the 1870s D.the 1870's 改选哪个...知道

In后面直接跟年份，所以不选A B和C都是表示19世纪70年代 但是前面有介词In所以只选用C D没有这样表示年份的

1.The two great men wrote those letters in（C)A.1870's B.1870s C.the 1870s D.the 1870 the 1870s表示18世纪70年代. 一般年份前不加the等定冠词,后面也不跟别的,就in 1870就可以了.2.There are about two ( D ) students in the newly built school.A.thousand ...

D表示1870至1880这十年间，即19世纪70年代 不能选B可能是因为Marx学习俄语的时间跨度较长，选D显得时间上比较准确！

In the 1870s, Twain married Olivia Langdon, daughter of a wealthy merchant, and settled in Hartford, Massachusetts. It was during this stable period in his life that he wrote some of his most famous works, including "The Adventures of Tom Sawyer," "Life on the Mississippi," an...

表示"在某世纪...年代" , 必须带the ,因此正确的是: in the1870s 十九世纪七十年代

in 1870 在1870年 （就指在这一年）in the 1870s，in 1870's 在19世纪70年代（指在1870---1879年）

D the 1870s 年代的表达法： 用“定冠词+(世纪百位进数+十位年代数)+s”表示 如本题 ：在十九世纪七十年代 写作：in the 1870s 读作： in the eighteen seventies 【俊狼猎英】团队为您解答，祝您开心~

In the 1870s, Twain married Olivia Langdon and settled in Hartford, Connecticut. This period saw the publication of several renowned works, including "Tom Sawyer" (1881) and "The Prince and the Pauper" (1881). "Life on the Mississippi" (1883) and "Huckleberry Finn" (1884) are...

In the 1930s, also known as the thirties of the twentieth century or the nineteen thirties, the world was recovering from the Great Depression.The 1860s, or the sixties of the 19th century, were a time of technological advancements and social reforms.In the 1870s, Marx, already...

【答案】：C 词组辨析。in turn意为“反过来”；in fact意为“事实上”；in return意为“作为回报”；in the end意为“最后”。文章指出，植物和真菌之间形成了共生关系，真菌帮助绿色植物吸收矿物质，作为回报，植物给真菌提供糖分。in return符合题意。