第6题: [单项选择]Many studies have proven that eating at fast-food restaurants ______ per week is associated with more weight gain in otherwise healthy young adults. A. twice more B. as twice C. twice more than D. more than twice 参考答案:D 答案解析:[理由] 本句测试下列固定用法： more than+倍数词(twice、three times、four times…) 不只若干倍 [例] I have been to Ha
A. element B. component C. ingredient D. constituent 参考答案:D 答案解析:[解析] 近形近义题。constituent意为“一事物的一组成部分”，还可指“以之形成一复杂事物的整体”。 [A]element 意为“要素，元素，成分”，可用于物质的、非物质的、有形的或无形
