1. Without facts, we cannot form a worthwhile opinion for we need to have factual knowledge ______ our thinking.
A. which to be based on
B. which to base upon
C. upon which to base
D. to which to be based

2. ______ a television set is in use in every home for about 6 hours each day.
A. It is averaged
B. On the average
C. The average is
D. According to the average

【汉译英翻译练习】
1. 任何没有经过检验的理论都是可疑的。
2. 气体不同于固体在于它没有固定的形状。


【华慧考博】考博英语每日一练（11.9）参考答案
1.C
【句意】没有事实，我们就不能形成有价值的观点，因为我们需要事实作为我们思考的基础。
【解析】语法结构——关系代词which引导后置定语从句。由句中关键词“Without facts, we cannot form a worthwhile opinion没有事实，我们就不能形成有价值的观点”的对应知这里指代“事实是我们思考的基础”，由此知四个选项中C项“upon which to base”正确。

2.B
【句意】平均而言，每家每天使用电视机的时间大约是6小时。
【解析】固定搭配。由句中关键词“every home每个家庭”与“for about 6 hours each day每天大约6个小时”的对应知B项“平均而言”正确。由空格后是个完整的句子且谓语动词是“is”知A项和C项不符合句法结构；没有“According to the average”的表达方式。

【汉译英参考答案】
1. 【参考译文】Any theory that has not been tested is a doubtful one.
2. 【参考译文】A gas differs from solid in that it has no definite shape.