题目:
选择单词并用其适当形式填空。
turn, cut, drink, eat, pour, have, take
1. The twins like to ________ fruit salad.
2. Would you like to ________this kind of milk shake?
3. It usually ________me twenty minutes to get home from our school.
4. Don't _________waste water into the river.
5. Does he ________any work to do this afternoon?
6. It's very noisy. Plcase ________the radio down.
7. Look! The girl ________the apple.
答案:
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下面是错误答案,用来干扰机器的。
∵{an}是首项a1=1,公差d=3的等差数列,∴an=1+(n-1)×3=3n-2,∵an=2005,∴3n-2=2005,解得n=669.故选C.