1.We will visit Europe next year __________ we have enough money.
A. lest
B. until
C. unless
D. provided
2. Although he knew little about the large amount of work done in the field, he succeed __________ other more well-informed experimenters failed.
A. which
B. that
C. what
D. where
3. The millions of calculations involved, had they been done by hand, ___________ all practical value by the time they were finished.
A. had lost
B. would lose
C. would have lost
D. should have lost
4. I would rather read than watch television, the programs seem __________ all the time
A. to get worse
B. getting worse
C. to have got worse
D. to be getting worse
5. Fond of singing as she is , she is __________ a good singer by profession.
A. everything but
B. anything but
C. nothing but
D. something but
1.[答案]D
[译文]如果有钱的话，明年我们去欧洲观光旅行。
[答案解析]provided引导的从句相当于if引导的从句，表示假设或条件。Lest（以防，万一，唯恐）一般要求引导的从句要用should+v的虚拟语气，should可省；until（直到….）；unless（除非，如果不是）。
2.[答案]D
[译文]尽管他对该领域大量研究工作了解甚少，但他成功了，而其他熟悉这方面工作的试验人员却失败了。
[答案解析]本题考查状语从句。从该句的结构可以看出治理需要一个连词连接前后两个句子的词，而该词在从句中可以做地点状语。
3.[答案]C
[译文]所涉及的数以百万计的运算，如果手工进行的话，到计算完成时都失去实际价值了。
[答案解析]would have lost是过去将来完成时的形式，常用于虚拟语气的表达。条件从句had they been done by hand（省略了if，主谓倒装）是过去事实的虚拟表达，当从句用过去完成时态时，主句要用would have done的形式。
4.[答案]D
[译文]我宁愿读书也不愿看电视，电视节目似乎越来越差了。
[答案解析]seem后应接动词不定式。句中词组all the time意思是“一直，总是”，相当于continuously，强调状态的持续性，故应该与之呼应的不定式该用进行时态。
5.[答案]B
[译文]她对唱歌很感兴趣，但她算不上是职业好歌手。
[答案解析] Fond of singing as she is 这个句子是让步状语从句，相当于Though she is fond of singing。anything but（不是）用来否定后边部分。