Plants are very important. This is because plants can make food from air, water and sunlight. Animals and man cannot make food from air, water and sunlight. Animals can get their food by eating plants and animals. Man gets his food by eating plants and animals, too. So animals and man need plants in order to live. This is why there are so many plants around us.

　　There are two kinds of plants: flowering plants and non-flowering plants. Almost all the trees around us are flowering plants. You can know some trees from their flowers and fruits. Non-flowering plants do not grow flowers. You can not see many non-flowering plants around you.

　　If you look carefully at the plants around us, you will find that there are many kinds of plants. Some plants are large and some are small. Most of them are green. Thanks to the plants around us we can live on the earth.

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A．we can get what we need from pl ants

B．plants are green

C．plants can grow easily

D．we like all kinds of plants

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(5) The best title（标题）for this passage is_______.

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—The supermarket is crowded（拥挤的）. There are ___________ people there.
—Yeah, and the things there are always ______________ expensive（贵的）.

短文填空选择恰当的单词填空，每词限用一次。（有两个多余的选项）

Pick up one of these cubes and you probably won’t be able to put it down．How hard（1）_____ it be to rearrange（重新排列）the nine colored squares on each side of the cube? In fact，there are 43×10³⁰ possibilities! It has been 31 years since the cubes were sold in stores around the world．Its（2） _____，however， began years earlier as a simple classroom example．In 1974，Dr．Erno Rubik（3） _____ the“Magic Cube”as he called it． He did this to help his students understand 3-D concepts．This classroom model was quickly changed into a （4） _____ toy．In 1979，Ideal Toys bought the rights（权利）（5） _____ sold it as“Rubik’s Cube”．The invention（6） _____ became a 1980s cultural icon

As time went（7） _____，the cube’s popularity became less，however，it made a comeback with the Internet．Now（8） _____ can go online and find many videos that show ways to solve the cube．Erik Akkersdijk of the Netherlands holds the present world record．He finished it in just 7．08 seconds l