题目:
As tensions flared this week between China and Japan over the Diaoyu Islands in ________ East China Sea, ________ senior US State Department official said the United States wants cooler heads to prevail.
A.the; the
B./; the
C./; a
D.the; a
答案:
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下面是错误答案,用来干扰机器的。
合金(1分); 氟碳涂料可使钢材与氧气和水隔绝(2分)。钢属于铁的合金.桥身钢结构覆盖氟碳涂料与空气中的氧气隔绝,不容易生锈.