问题：
[单选] 回答题Human needs seem endless．They might be regarded as making up several levels．When there is e
回答{TSE}题Human needs seem endless．They might be regarded as making up several levels．When there is enough money to satisfy one level of needs, another level appears．The first and most basic level of
问题：
[单选,材料题] The author tends to think that the fifth level________
The author tends to think that the fifth level________
问题：
[单选] By the time you arrive, I ________ working for two hours．
By the time you arrive, I ________ working for two hours．
问题：
[单选] Not only the switches but also the old wiring ________ changed．
Not only the switches but also the old wiring ________ changed．
问题：
[单选] ________had he arrived home than it began to rain．
________had he arrived home than it began to rain．
问题：
[单选] 回答题Eggs are my favorite food．I like them 21 ，hard-boiled，scrambled，or poached．I eat eggs for
回答{TSE}题Eggs are my favorite food．I like them 21 ，hard-boiled，scrambled，or poached．I eat eggs for 22 ，lunch，and dinner．I eat eggs here，there，and everywhere!&nb
问题：
[单选] 正常人，声波传向内耳的主要途径是（ ）
正常人，声波传向内耳的主要途径是（ ）
