题目内容
In American, a friend inviting you to a restaurant doesn't mean that he or she will pay for the meal ______ you are told ahead.
| A．until | B．unless | C．although | D．if |
B
解析试题分析：句意：在美国，如果你没有被提前告知的话，一个朋友邀请你去餐馆意思并不是她（他）要买单。A. until 直到B. unless如果不C. although虽然D. if如果。根据句意，故选B。
考点：考查连词的用法。
Come on! You will catch up with others _______ you work hard.
| A．if | B．unless |
| C．although | D．so |
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| A．before | B．when | C．until | D．since |
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—He was an ancient teacher ______ wise sayings have influenced many people in different countries.
| A．that | B．which | C．who | D．whose |
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| A．when | B．after | C．although | D．unless |
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| A．if | B．since | C．unless | D．in order that |
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| A．Unless | B．Because of | C．Even though | D．Because |