I’m sorry. I ____ the exercise book in my home. I can’t hand it in at present.

A. have left B. have forgotten C. left D. forgot

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---How much difficulty did you have________________ this physics problem?

---_____________. It's quite easy.

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Mary didn’t know who _______ the problem she met with at that time.

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任務型閱讀 閱讀下面的短文，根據(jù)短文內(nèi)容完成表格中所缺信息，在答題卷上相應的橫線上填寫答案，每空限填一詞。

New Energy (能源) in the Twenty-first Century

Energy from the wind

All over the world, people use wind power. It is a clean source of energy, and there is lots of it. However, if the wind does not blow, there is no wind energy.

Energy from the water

When water moves from a higher place to a lower place, it has the power to make electricity (電). In Brittany, waterpower produces enough energy to power a town of 40, 000 people. Waterpower gives energy without pollution. However, people have to build dams to use this energy, and building dams is very expensive.

Energy from the earth

There is heat in the rocks under the earth. Scientists use the heat to make geothermal energy. San Francisco gets half of the energy it needs from geothermal power. This kind of energy is cheap, but it is only possible in a few places in the world.

Energy from the sun

Solar panels (太陽能電板) on the roofs of houses and buildings can turn energy from the sun into electricity. These panels can create enough energy to heat the whole house during winter. Solar power is clean and plentiful, but when the weather is bad, it can’t produce power.

New __1.___

Advantages (優(yōu)點) and disadvantages

Wind power

There is a lot. If the wind doesn’t ___2.____, there is no power.

Water power

Without ____3.____. But __4.____ dams is very ___5.____.

Geothermal power

This type of energy is ___6.___, but it is _7.____ in most places in the world.

Solar power

Solar power is_8.___ and__9.____ , but it needs good . _10.____

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Scientists did an experiment on this. Dr Tony Goldstone from Imperial College London, scanned (掃描) the brains of 21 men and women, around the age of 25. On the first day, these people skipped breakfast before the scans. On the second day, they had cereal (谷物), bread and jam as breakfast. After the scan on both days, they had their lunch.

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A. scientists found out why eating breakfast is important

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② The volunteers had lunch.

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閱讀下面短文，按照句子結構的語法性和上下文連貫的要求，在空格處填入一個恰當?shù)脑~或使用括號中詞語的正確形式填空。

Dear Nancy,

How are you? I will be in the UK for another two weeks. I like the life here. I always take a bus to go to school. 1.____ I dislike waiting for the bus too long. There are a lot of after-school 2._______(activity) at my school. It’s good to relax by 3.______(exercise). I like playing basketball best. I feel like being a basketball player 4.______ Yao Ming. Also, I go to the dance club every weekend. All of my friends in the club say I can dance 5.________(wonderful). I like cola, but I hardly ever drink it because I don’t think it’s good6._______ my health. I’m good with my host family. I often help them 7._____(do) housework on weekends. The only problem is that it always8.________(rain) there, so I like taking 9.______ umbrella with me. All in all, it’s10._____(enjoy) to stay here. What about your life?

Write to me soon. Yours,

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