题目
题型:不详难度:来源:
It is not until recently ______ the scientists have found proof of there being water on Mars.
A.when | B.that | C.how | D.what |
答案
解析
核心考点
试题【It is not until recently ______ the scientists have found proof of there being w】;主要考察你对连词等知识点的理解。[详细]
举一反三
He warmly congratulated them on _____ they had achieved in science and technology.
A.that | B.where | C.what | D.which |
Students can easily fall behind in their studies ____ they don’t manage their spare time carefully.
A.though | B.if | C.since | D.until |
_____ he is very busy, he spends at least two hours every day surfing the Internet in order to find out the latest development in science and technology.
A.Even though | B.When | C.Unless | D.Whether |
A.Whether | B.If | C.When | D.That |
A.beside | B.but | C.except that | D.of |
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