第27题: [单项选择]______ the 1500’s ______ the first European explored the coast of California. A. It was until ... then B. It was not until ... when C. it is until ... that D. It was not until ... that 参考答案:D 答案解析:[解析] 本题考查的是强调句式。强调句式由“It is/was+被强调成分+that/who...”构成。本句强调的是时间。Not until...意为“直到……才”。