I had wanted to help you last night but I couldn’t spare any time, for I ______ a composition which

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I had wanted to help you last night but I couldn’t spare any time, for I ______ a composition which I have to hand in this morning.

A：wrote

B：was writing

C：had writte

D：have writte

上一题下一题 0.0难度选择题更新时间:2019-02-11 06:39:57

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B

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阅读短文，下列问题

Computers are very important for the students now. For the city students, it's very easy to find a place to surf the Internet(网上冲浪). And for the village students, they can go to the Internet bar(网吧). Most of them spend more than two hours there, and some of them even spend more than eight hours there every day. They can do their homework, download(下载) some information for their homework, download music, send emails and play games.Most of them spend too much time playing games, so it's bad for their study.

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将某种植物放在特定的实验装置内，研究温度对光合作用与呼吸作用的影响，实验以该植物光合作用吸收的CO₂总量与呼吸作用CO₂的释放量为指标，实验结果如下表所示．下列对该植物数据表格分析正确的是（）

温度（℃）	20	25	30	35	40	45
光照下CO₂吸收总量（mg/h）	1.00	1.75	2.50	3.25	3.75	3.50
黑暗中CO₂释放量（mg/h）	0.50	0.75	1.00	1.50	2.25	3.00

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