题目内容
Daisy has been learning Putonghua __________ the age of five.
| A．at | B．since | C．for | D．in |
B
解析试题分析：句意：Daisy在他从他五岁的时候就学普通话。现在完成时可以用来表示发生在过去某一时刻的,持续到现在的动作（用行为动词表示）或状态（be动词表示）常与for（+时间段）,since（+时间点或过去时的句子）连用.根据该句是现在完成时态，the age of five 是时间点，故选B。
考点：考查介词的用法。
世纪百通期末金卷系列答案 —May I go to the science museum with you next Saturday?
—You can't ________you have a ticket. I have only one ticket.
| A．if | B．until |
| C．unless | D．as soon as |
The red suitcase is expensive ______it’s made of leather.
| A．when | B．if |
| C．because | D．though |
Jim’s a taxi driver, ____ he really wants to be a doctor.
| A．or | B．and | C．so | D．but |
–Why were you late for school this morning?
–I got up very early this morning, ________ I didn’t catch the first bus.
| A．and | B．but | C．or | D．so |
I took out my notebook and wrote down my teacher’s new phone number I forgot it.
| A．until | B．before |
| C．when | D．since |
Frank often wears a mask _____ he can keep fit in the foggy and hazy (霾) weather.
| A．only if | B．until |
| C．so that | D．even though |
—Who broke the window yesterday?
— ______ Jack ______ Mike. It was Jim.
| A．Not only; but also | B．Both; and |
| C．Either; or | D．Neither; nor |