4. Time travel is possible. /There is no scientific proof for the idea.

4.  There is no scientific proof for the idea that time travel is pos?sible.

題目來源：全品作業(yè)本高中英語必修3新課標(biāo)人教版 > Period Two Grammar

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B

   In the winter months the temperature in most of Canada usually stays below 0。C. However, in some parts of Canada, such as south-ern British Columbia, the temperature rarely goes below 0。C. In most areas where people live, snow will be on the ground from mid-December to mid-March. Though Canada's winter may be much colder and longer than you are used to, it can be very enjoyable. For many Canadians, being active in winter is an important part of enjoying life. There are many outdoor winter activi?ties, including skiing, ice fishing, walking, and skating. Joining in one of these ac?tivities may help you appreciate winter and enjoy your time outside in the snow.

Dressing for winter

   During the winter in Canada, you will need warm clothing. If possible, arrive with these items or be prepared to buy them soon after your arrival. You will need; warm waterproof boots a scarf for your neck a hat that covers your ears gloves for your hands thick winter coats, pants and sweaters Layers keep you warm

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D.  To encourage you to enjoy winter in Canada.

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Healthy habits for living longer

By keeping your daily habits healthy? you can add years to your life. Here are some tips for living longer.

Keep daily habits healthy. Many of us are set in our daily habits. We eat the same meal, wear the same clothes, take the same route to work and work the same old job. But what we sometimes fail to recognize is the huge
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