2018考研复习进程已过大半，2018考研大纲已经发布？文都考研小编为大家推送了有关大纲变动以及如何进行后半程复习的知识点。在进程过半的考研复习中，2018何凯文每日一句会一如既往陪伴大家。每一场考研路都有成败，希望考生们能不忘初心，坚持当初决定考研的信仰。针对考研英语复习，小编也会及时整理推送相关内容。以下是第221句：
【温馨推荐】何凯文每日一句：2018考研英语汇总(KK精讲)
今天的句子：
That the plates are moving is now beyond dispute. Africa and South America, for example, are moving away from each other as new material is injected into the sea floor between them. The complementary coastlines and certain geological features that seem to span the ocean are reminders of where the two continents were once joined. The relative motion of the plates carrying these continents has been constructed in detail, but the motion of one plate with respect to another cannot readily be translated into motion with respect to the earth’s interior.
68.That Africa and South America were once joined can be deduced from the fact that ________.
[A] the two continents are still moving in opposite directions
[B] they have been found to share certain geological features
[C] the African plate has been stable for 30 million years
[D] over 100 hot spots are scattered all around the globe
句子的解析：
直接定位到这句：
The complementary coastlines and certain geological features that seem to span the ocean are reminders of where the two continents were once joined.
词汇：complementary 互补的
句子分析：A and B are reminders of C
A=The complementary coastlines
B=certain geological features that seem to span the ocean
C= where the two continents were once joined
题干：.That Africa and South America were once joined=
where the two continents were once joined
B=certain geological features that seem to span the ocean =
[B] they have been found to share certain geological features
完美的同义替换！
答案B！
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