题目内容
—Could I watch TV, mum? I want to have a rest.
—No，you _______. You must finish your homework first.
A. mustn't B. couldn't
C. may not D. can't
D
【解析】
试题分析：句意：--我可以看电视吗，妈妈？我想休息。--不，你不能。你必须先完成作业。mustn't禁止，不允许；couldn't不能；may not不可以；can't不能。在Could I watch TV, mum?中的could只表是委婉语气，不表示过去时态。所以选D。
考点：考查情态动词。
金博士一点全通系列答案词语运用 (10小题，每小题1分，共10分)1
阅读短文，用方框内所给单词的正确形式填空，使短文意思通顺、完整。请将答案写在短文后相应题号的横线上。注意：①每个词只能用一次。②每空限填一词，有些词需要做相应的变化。③其中有两个多余选项。
continue also know sweep out them such around away ceremony up expense |
In ancient China, Qingming was by no means the only time when sacrifices（祭品） were made to ancestors. In fact 1. ceremonies were held very frequently, about every two weeks, in addition to other important holidays and festivals. The formalities of these 2. were in general very elaborate（复杂的） and expensive in terms of time and money.
In an effort to reduce this 3. , Emperor Xuanzong of the Tang Dynasty declared in 732 AD that respects would be formally paid at the tombs of ancestors only on the day of Qingming. This is the custom that 4. to date. People will visit their ancestors' graves. They will tidy 5. , remove weeds and sweep away leaves. This is why Qingming is also 6. as the Grave 7. Day. Beijing's subway is particularly crowded 8. Qingming as people flock to Babaoshan, Beijing's most famous cemetery and crematorium, to pay respects to 9. departed loved ones.
Qingming is not just a day of remembrance, it is 【小题1O】 a day to celebrate the coming of spring, often by going out for a picnic. With the coming of spring, nature wakes up, dressing the world in green. All is new, clean and fresh.